Fix yamllint violations

Author: joschi

src/test/resources/yaml/config/config.yaml

@@ -1,3 +1,4 @@
+---
 masterUrl: https://localhost:443
 apiVersion: v1
 namespace: default

src/test/resources/yaml/config/request-config.yaml

@@ -1,3 +1,4 @@
+---
 watchReconnectInterval: 3s
 watchReconnectLimit: 25
 connectionTimeout: 10s

src/test/resources/yaml/factory.yaml

@@ -1,3 +1,4 @@
+---
 name: my-k8s-usecase
 config:
   masterUrl: https://localhost:443

src/test/resources/yaml/http/dispatcher/dispatcher.yaml

@@ -1,2 +1,3 @@
+---
 maxConcurrentRequests: 15
 maxConcurrentRequestsPerHost: 5

src/test/resources/yaml/http/http-client.yaml

@@ -1,3 +1,4 @@
+---
 followRedirects: false
 followSslRedirects: false
 proxy:

src/test/resources/yaml/http/interceptor/backwards-compatibility.yaml

@@ -1 +1,2 @@
+---
 type: backwards-compatibility

src/test/resources/yaml/http/interceptor/basic-auth.yaml

@@ -1,3 +1,4 @@
+---
 type: basic-auth
 username: admin
 password: hunter2

src/test/resources/yaml/http/interceptor/impersonation.yaml

@@ -1,3 +1,4 @@
+---
 type: impersonation
 username: admin
 groups:

src/test/resources/yaml/http/interceptor/oauth.yaml

@@ -1,3 +1,4 @@
+---
 type: oauth
 oAuthToken:
   type: string

src/test/resources/yaml/http/networkinterceptor/logging.yaml

@@ -1 +1,2 @@
+---
 type: logging