Add release process for staging images (kubernetes-sigs#460)

* Re-sync controller implementation with CAPA, Fix cloud config indent bug, also copy addons to examples output folder, Re-sync makefile

* fixup

* fixup

cloudbuild.yaml

@@ -0,0 +1,18 @@
+# See https://cloud.google.com/cloud-build/docs/build-config
+timeout: 1200s
+options:
+  substitution_option: ALLOW_LOOSE
+steps:
+  - name: 'gcr.io/k8s-testimages/gcb-docker-gcloud:v20190906-745fed4'
+    entrypoint: make
+    env:
+    - DOCKER_CLI_EXPERIMENTAL=enabled
+    - TAG=$_GIT_TAG
+    - ADDITIONAL_TAG=$_PULL_BASE_REF
+    args:
+    - release-staging
+substitutions:
+  # _GIT_TAG will be filled with a git-based tag for the image, of the form vYYYYMMDD-hash, and
+  # can be used as a substitution
+  _GIT_TAG: '12345'
+  _PULL_BASE_REF: 'dev'

examples/generate.sh

@@ -213,6 +213,9 @@ echo "Generated ${MACHINEDEPLOYMENT_GENERATED_FILE}"
 cp ${SOURCE_DIR}/addons.yaml "${ADDONS_GENERATED_FILE}"
 echo "Generated ${ADDONS_GENERATED_FILE}"
 
+cp ${SOURCE_DIR}/addons.yaml "${ADDONS_GENERATED_FILE}"
+echo "Generated ${ADDONS_GENERATED_FILE}"
+
 # Generate Cluster API provider components file.
 kustomize build "github.com/kubernetes-sigs/cluster-api/config/default/?ref=master" > "${COMPONENTS_CLUSTER_API_GENERATED_FILE}"
 echo "Generated ${COMPONENTS_CLUSTER_API_GENERATED_FILE}"