Add GitHub actions for immediate Concourse triggering

Author: bgandon

.github/workflows/trigger-git-resource-check.yml

@@ -0,0 +1,14 @@
+name: Trigger Concourse 'git' resource
+on: [ push, workflow_dispatch ]
+jobs:
+  trigger-resource-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger resource check
+        uses: gstackio/trigger-concourse-resource-check-action@v1
+        with:
+          concourse-url:           https://ci.gstack.io
+          concourse-team:          gk-plat-devs
+          concourse-pipeline:      hashicorp-release-resource
+          concourse-resource:      git
+          concourse-webhook-token: ${{ secrets.GK_CONCOURSE_WEBHOOK_TOKEN }}

.github/workflows/trigger-pr-resource-check.yml

@@ -0,0 +1,14 @@
+name: Trigger Concourse pull-request resource
+on: [ push, pull_request, workflow_dispatch ]
+jobs:
+  trigger-resource-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger resource check
+        uses: gstackio/trigger-concourse-resource-check-action@v1
+        with:
+          concourse-url:           https://ci.gstack.io
+          concourse-team:          gk-plat-devs
+          concourse-pipeline:      hashicorp-release-resource
+          concourse-resource:      git-pull-requests
+          concourse-webhook-token: ${{ secrets.GK_CONCOURSE_WEBHOOK_TOKEN }}