Use go modules, update git layout, add license

Move from vendor to go modules. Update the overall git module layout to
follow golang best practices, including adding a new Makefile.

Add github workflow for build and coverage.

Add static version definition used by the binary.

Author: rochaporto

.github/workflows/coverage.yml

@@ -0,0 +1,28 @@
+name: coverage
+on:
+  push:
+    branches:
+      - '*'
+jobs:
+  test:
+    name: Test with Coverage
+    runs-on: ubuntu-latest
+    env:
+      GOVER: 1.13.3
+      GOPROXY: https://proxy.golang.org
+    steps:
+      - name: Set up Go ${{ env.GOVER }}
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ env.GOVER }}
+      - name: Check out code
+        uses: actions/checkout@master
+      - name: Run make test-coverage
+        run: |
+          make test-coverage
+      - name: Send coverage
+        env:
+          COVERALLS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          GO111MODULE=off go get github.com/mattn/goveralls
+          $(go env GOPATH)/bin/goveralls -coverprofile=profile.cov -service=github

.github/workflows/csi-cvmfsplugin.yml

@@ -0,0 +1,73 @@
+#
+# Copyright The CERN.
+#
+#
+# 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.
+#
+
+name: csi-cvmfsplugin
+
+on:
+  push:
+    branches:
+      - '*'
+    tags:
+      - 'v*'
+    paths-ignore:
+      - 'CONTRIBUTING.md'
+      - 'README.md'
+      - 'docs/**'
+jobs:
+  build:
+    name: Build binaries
+    runs-on: ubuntu-latest
+    env:
+      GOVER: 1.13.3
+      GOPROXY: https://proxy.golang.org
+    steps:
+      - name: Set up Go ${{ env.GOVER }}
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ env.GOVER }}
+      - name: Install golangci-lint
+        if: matrix.target_arch != 'arm'
+        run: |
+          curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b "${{ env.GOROOT }}/bin" v1.21.0
+      - name: Check out code
+        uses: actions/checkout@v1
+      - name: Make test
+        run: |
+          make test
+      - name: Make build for cross platform binaries
+        run: |
+          make build-cross
+      - name: Make changelog
+        if: startsWith(github.ref, 'refs/tags/v')
+        run: |
+          sudo apt-get update
+          sudo apt-get install ruby
+          make changelog
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Release cross platform binaries
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/v')
+        with:
+          files: |
+            _dist/**
+          body_path: CHANGELOG.md
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build docker images
+        run: |
+          make docker

.gitignore

@@ -1,10 +1,5 @@
-# build directory
-/output*/
-/_output*/
-/_output
-
-# docker build
-/deploy/docker/csi-cvmfsplugin
+bin
+_dist
 
 # Emacs save files
 *~
@@ -21,4 +16,4 @@ Session.vim
 # git merge files
 *.orig
 *.patch
-*.rej
+*.rej

CONTRIBUTING.md

@@ -0,0 +1,4 @@
+## Development
+
+go get github.com/mitchellh/gox
+go get golang.org/x/tools/cmd/goimports

Gopkg.lock

@@ -1,4 +1,5 @@
 
+
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -200,3 +201,4 @@
    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.
+