gh18864 new GH action to run che-docs... (#657)

* gh18864 new GH action to run che-docs release when olm/eclipse-che-preview-*/deploy/olm-catalog/eclipse-che-preview-*/eclipse-che-preview-*.package.yaml is updated in master branch

Change-Id: Icfb71b6c1e254af4778dcc4f458c4565e94de867
Signed-off-by: nickboldt <nboldt@redhat.com>

* probably don't need python

Change-Id: I45e689555b9ca2f5722ff18309fd739181578379
Signed-off-by: nickboldt <nboldt@redhat.com>

* forgot the --trigger-release flag to create a tag

Change-Id: Ie41b19f473384eedf131153deb6e32a6288b689b
Signed-off-by: nickboldt <nboldt@redhat.com>

.github/workflows/release-che-docs.yml

@@ -0,0 +1,46 @@
+# This Workflow creates PRs for the release of the latest che-docs
+name: Release che docs
+on:
+  # manual trigger if required
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'The version that is going to be released. Should be in format 7.y.z'
+        required: true
+        default: '7.y.z'
+      forceflag:
+        description: 'To force creation of .x branch, use --force flag here'
+        default: ''
+  # trigger on commit to master branch of new CSVs, eg., https://github.com/eclipse/che-operator/pull/571/files
+  push:
+    branches: 
+      - master
+    paths:
+      - 'olm/eclipse-che-preview-*/deploy/olm-catalog/eclipse-che-preview-*/eclipse-che-preview-*.package.yaml'
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Release che docs PRs
+        run: |
+          hub version
+          git config --global user.name "Mykhailo Kuznietsov"
+          git config --global user.email "mkuznets@redhat.com"
+          export GITHUB_TOKEN=${{ secrets.CHE_BOT_GITHUB_TOKEN }}
+          set -e
+          # if not run manually, need to compute che docs version from latest released CSV
+          if [[ "${{ github.event.inputs.version }}" == "" ]] || [[ "${{ github.event.inputs.version }}" == "7.y.z" ]]; then
+            chedocsVersion=$(cat olm/eclipse-che-preview-openshift/deploy/olm-catalog/eclipse-che-preview-openshift/eclipse-che-preview-openshift.package.yaml | yq -r '.channels[].currentCSV' | sed -e "s#eclipse-che-preview-openshift.v##")
+          else
+            chedocsVersion="${{ github.event.inputs.version }}"
+          fi
+          cd /tmp
+          # TODO switch to master branch version, not PR version from https://github.com/eclipse/che-docs/pull/1823
+          curl -sSLO https://raw.githubusercontent.com/eclipse/che-docs/f634c1d49b0bc88718dcb593f75d11f45de2ba1c/make-release.sh
+          chmod +x make-release.sh
+          # fetch che-docs code, bump antora playbook file, create .x branch if not exist, and create release tag from that branch
+          ./make-release.sh --repo git@github.com:eclipse/che-docs --version ${chedocsVersion} ${{ github.event.inputs.forceflag }} --trigger-release