ci(submodule): push update to parent submodule (#470) (#471)

* ci(submodule): push update to parent submodule

* Use remote branch with check

* tmp: use fork

* fix variables

* point git config to gitmodules

* move to own workflow, update rev-parse

* don't use fork

(cherry picked from commit 940b9d2)

Co-authored-by: Elliott Baron <ebaron@redhat.com>

.github/workflows/submodule.yaml

@@ -0,0 +1,44 @@
+name: submodule
+
+on:
+  push:
+    branches:
+      - main
+      - v[0-9]+
+      - v[0-9]+.[0-9]+
+      - cryostat-v[0-9]+.[0-9]+
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  update-submodule:
+    if: ${{ github.repository_owner == 'cryostatio' }}
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        repository: cryostatio/cryostat
+        token: "${{ secrets.SUBMODULE_TOKEN }}"
+        ref: "${{ github.ref_name }}"
+    - name: Check remote submodule branch
+      run: |
+        remote_branch="$(git config --get -f .gitmodules submodule.web-client.branch)"
+        if [[ "$remote_branch" != "${{ github.ref_name }}" ]]; then
+          printf "Expected remote branch %s, found branch %s\n" "${{ github.ref_name }}" "$remote_branch" >&2
+          exit 1
+        fi
+    - name: Update submodule to latest commit
+      run: |
+        git submodule update --init
+        git submodule update --remote
+    - name: Commit and push submodule
+      # User info comes from: https://github.saobby.my.eu.orgmunity/t/github-actions-bot-email-address/17204/5
+      run: |
+        git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+        git config user.name "github-actions[bot]"
+        git add --all
+        git_hash="$(git rev-parse --short :web-client)"
+        git commit -m "build(web-client): update submodule to $git_hash" || echo "No changes to commit"
+        git push