Initial must-gather base code

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
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.github/ISSUE_TEMPLATE/task.md

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+---
+name: Task 🔧
+about: Internal things, technical debt, and to-do tasks to be performed.
+title: ''
+labels: 'kind/task'
+assignees: ''
+
+---
+### Is your task related to a problem? Please describe.
+<!-- A clear and concise description of what the problem is.-->
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.github/PULL_REQUEST_TEMPLATE.md

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+**What type of PR is this?**
+> Uncomment only one ` /kind` line, and delete the rest.
+> For example, `> /kind bug` would simply become: `/kind bug`
+
+> /kind bug
+> /kind cleanup
+> /kind failing-test
+> /kind enhancement
+> /kind documentation
+> /kind code-refactoring
+
+
+**What does this PR do / why we need it**:
+
+**Have you updated the necessary documentation?**
+
+* [ ] Documentation update is required by this PR.
+* [ ] Documentation has been updated.
+
+**Which issue(s) this PR fixes**:
+
+Fixes #?
+
+**Test acceptance criteria**:
+
+* [ ] Unit Test
+* [ ] E2E Test
+
+**How to test changes / Special notes to the reviewer**:

Dockerfile

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+FROM quay.io/openshift/origin-must-gather:4.13
+
+# Save original gather script
+RUN mv /usr/bin/gather /usr/bin/gather_original
+
+# Use our gather script in place of the original one
+COPY gather_gitops.sh /usr/bin/gather
+
+# Make it executable
+RUN chmod +x /usr/bin/gather
+
+ENTRYPOINT /usr/bin/gather

Makefile

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+## Copyright 2023 Red Hat, Inc.
+##
+## Licensed under the Apache License, Version 2.0 (the "License");
+## you may not use this file except in compliance with the License.
+## You may obtain a copy of the License at
+##
+##     http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+
+default: build
+
+HUB ?= quay.io/redhat-developer
+TAG ?= latest
+
+lint:
+	@if command -v shellcheck >/dev/null; then \
+		find . -name '*.sh' -print0 | xargs -0 -r shellcheck; \
+	else \
+		echo "shellcheck not found, installing it now..."; \
+		if command -v apt-get >/dev/null; then \
+			sudo apt-get install -y shellcheck; \
+		elif command -v yum >/dev/null; then \
+			sudo yum install -y shellcheck; \
+		elif command -v dnf >/dev/null; then \
+			sudo dnf install -y shellcheck; \
+		elif command -v pacman >/dev/null; then \
+			sudo pacman -S --noconfirm shellcheck; \
+		else \
+			echo "shellcheck not found and unable to install it automatically"; \
+			echo "Please install shellcheck manually and run the lint target again"; \
+			exit 1; \
+		fi; \
+		find . -name '*.sh' -print0 | xargs -0 -r shellcheck; \
+	fi
+
+image:
+	@if command -v podman >/dev/null; then \
+		podman build -t ${HUB}/gitops-must-gather:${TAG}; \
+	else \
+		docker build -t ${HUB}/gitops-must-gather:${TAG}; \
+	fi
+
+push: image
+	@if command -v podman >/dev/null; then \
+		podman push ${HUB}/gitops-must-gather:${TAG}; \
+	else \
+		docker push ${HUB}/gitops-must-gather:${TAG}; \
+	fi

README.md

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-# gitops-must-gather
-A client tool for gathering GitOps Operator information in a OpenShift cluster.
+# GitOps Operator Must-Gather
+=================
+
+`GitOps must-gather` is a tool to gather information about the gitop-operator. It is built on top of [OpenShift must-gather](https://github.com/openshift/must-gather).
+
+### Usage
+```sh
+oc adm must-gather --image=quay.io/redhat-developer/gitops-must-gather:latest
+```
+
+The command above will create a local directory with a dump of the OpenShift GitOps state. Note that this command will only get data related to the GitOps Operator in your OpenShift cluster.
+
+You will get a dump of:
+- Information for the subscription of the gitops-operator
+- The GitOps Operator namespace (and its children objects)
+- All namespaces where ArgoCD objects exist in, plus all objects in those namespaces, such as ArgoCD, Applications, ApplicationSets, and AppProjects, and configmaps
+  - No secrets will be collected
+- A list of list of the namespaces that are managed by gitops-operator identified namespaces and resources from those namespaces. 
+- All GitOps CRD's objects and definitions
+- Operator logs
+- Logs of Argo CD
+- Warning and error-level Events
+
+In order to get data about other parts of the cluster (not specific to gitops-operator) you should run just `oc adm must-gather` (without passing a custom image). Run `oc adm must-gather -h` to see more options.
+
+An example of the GitOps must-gather output would be something like the following, where there are two argocd instances in namespaces `openshift-gitops` and `foo` and an additional namespace called `foo-managed` which is managed by namespace `foo`:
+```
+cluster-gitops
+        └── gitops
+            ├── appprojects.yaml
+            ├── crds.yaml
+            ├── namespace_openshift-gitops_resources
+            │   ├── application_controller_logs.txt
+            │   ├── applications
+            │   ├── applicationsets
+            │   ├── argocd.yaml
+            │   ├── deployments
+            │   │   ├── cluster.yaml
+            │   │   └── kam.yaml
+            │   ├── dex-server_logs.txt
+            │   ├── error-events.txt
+            │   ├── pods
+            │   │   ├── cluster-5db4b95547-rdz2m.yaml
+            │   │   └── kam-fff7f474f-d27c8.yaml
+            │   ├── redis_logs.txt
+            │   ├── replicasets
+            │   │   ├── cluster-5db4b95547.yaml
+            │   │   └── kam-fff7f474f.yaml
+            │   ├── repo-server_logs.txt
+            │   ├── routes
+            │   │   └── kam.yaml
+            │   ├── server_logs.txt
+            │   ├── services
+            │   │   ├── cluster.yaml
+            │   │   └── kam.yaml
+            │   ├── statefulsets
+            │   └── warning-events.txt
+            ├── namespace_foo_resources
+            │   ├── application_controller_logs.txt
+            │   ├── applications
+            │   │   └── guestbook.yaml
+            │   ├── applicationsets
+            │   │   └── guestbook.yaml
+            │   ├── argocd.yaml
+            │   ├── deployments
+            │   ├── dex-server_logs.txt
+            │   ├── error-events.txt
+            │   ├── managedNamespace_foo-managed
+            │   │   ├── deployments
+            │   │   ├── pods
+            │   │   ├── replicasets
+            │   │   ├── routes
+            │   │   ├── services
+            │   │   └── statefulsets
+            │   ├── pods
+            │   ├── redis_logs.txt
+            │   ├── replicasets
+            │   ├── repo-server_logs.txt
+            │   ├── routes
+            │   ├── server_logs.txt
+            │   ├── services
+            │   ├── statefulsets
+            │   └── warning-events.txt
+            ├── oc-version.txt
+            └── subscription.yaml
+```