Update and fix release workflows (#2)

Change summary:
-----------------
1. Updated the release action to not run build & push docker image step
   using a dockerfile, since it doesn't seem to be required.
2. The changes are in parity with terraform repo for AWS provider and also
   the terrafrom repo for GCP provider running cloudbench based installs.

Author: ravinadhruve10

.github/git-chglog/CHANGELOG.tpl.md

@@ -0,0 +1,28 @@
+{{ range .Versions }}
+{{ range .CommitGroups -}}
+### {{ .Title }}
+
+{{ range .Commits -}}
+* {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
+  {{ if .Body }}> {{ .Body }} {{ end }}
+  {{ end }}
+  {{ end -}}
+
+{{- if .RevertCommits -}}
+### Reverts
+
+{{ range .RevertCommits -}}
+* {{ .Revert.Header }}
+  {{ end }}
+  {{ end -}}
+
+{{- if .NoteGroups -}}
+{{ range .NoteGroups -}}
+### {{ .Title }}
+
+{{ range .Notes }}
+{{ .Body }}
+{{ end }}
+{{ end -}}
+{{ end -}}
+{{ end -}}

.github/git-chglog/config.yml

@@ -0,0 +1,32 @@
+style: github
+template: CHANGELOG.tpl.md
+info:
+  title: CHANGELOG
+  repository_url: https://github.com/sysdiglabs/terraform-google-secure
+options:
+  commits:
+  # filters:
+  #   Type:
+  #     - feat
+  #     - fix
+  #     - perf
+  #     - refactor
+  commit_groups:
+    title_maps:
+      feat: Features
+      fix: Bug Fixes
+      perf: Performance Improvements
+      refactor: Code Refactoring
+      ci: Continuous Integration
+      docs: Documentation
+      chore: Small Modifications
+      build: Compilation & Dependencies
+  header:
+    pattern: "^(\\w*)(?:\\(([\\w\\$\\.\\-\\*\\s]*)\\))?\\:\\s(.*)$"
+    pattern_maps:
+      - Type
+      - Scope
+      - Subject
+  notes:
+    keywords:
+      - BREAKING CHANGE

.github/workflows/release.yaml

@@ -10,35 +10,47 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-
-    - name: Extract tag name
-      id: tag
-      run: echo ::set-output name=VERSION::${GITHUB_REF#refs/tags/v}
-
-    - name: Create release
-      id: create_release
-      uses: actions/create-release@v1
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        tag_name: ${{ github.ref }}
-        release_name: ${{ github.ref }}
-        draft: true
-        prerelease: false
-        body: |
-          This is the ${{ github.ref }} release of ${{ env.GITHUB_REPOSITORY }}
-
-          ### Major Changes
-          ### Minor Changes
-          ### Bug fixes
-
-    - name: Build and push Docker image
-      uses: docker/build-push-action@v1
-      with:
-        username: ${{ secrets.SYSDIGLABS_DOCKERHUB_USER }}
-        password: ${{ secrets.SYSDIGLABS_DOCKERHUB_TOKEN }}
-        repository: ${{ env.GITHUB_REPOSITORY }}
-        add_git_labels: true
-        dockerfile: build/Dockerfile
-        tags: latest, ${{ steps.tag.outputs.VERSION }}
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: '^1.15'
+
+      - name: Setup go-chglog
+        working-directory: /tmp
+        env:
+          VERSION: "0.10.0"
+        run: |
+          wget https://github.com/git-chglog/git-chglog/releases/download/v${VERSION}/git-chglog_${VERSION}_linux_amd64.tar.gz
+          gunzip git-chglog_${VERSION}_linux_amd64.tar.gz
+          tar -xvf git-chglog_${VERSION}_linux_amd64.tar
+          sudo mv git-chglog /usr/local/bin/
+
+      - name: Generate changelog
+        run: git-chglog -c .github/git-chglog/config.yml -o RELEASE_CHANGELOG.md $(git describe --tags $(git rev-list --tags --max-count=1))
+
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          draft: true
+          prerelease: false
+          body_path: RELEASE_CHANGELOG.md
+
+      # Check if we need to build using dockerfile in the release. If yes, uncomment below.
+      #- name: Build and push Docker image
+      #  uses: docker/build-push-action@v1
+      #  with:
+      #    username: ${{ secrets.SYSDIGLABS_DOCKERHUB_USER }}
+      #    password: ${{ secrets.SYSDIGLABS_DOCKERHUB_TOKEN }}
+      #    repository: ${{ env.GITHUB_REPOSITORY }}
+      #    add_git_labels: true
+      #    dockerfile: build/Dockerfile
+      #    tags: latest, ${{ steps.tag.outputs.VERSION }}