CI: Trigger release build upon drone yaml changes (#46882)

* Add trigger-test-release step

* Change cd command

* Add failure:ignore

* Add depth when cloning

* Fix wrong secret

.drone.yml

@@ -702,6 +702,29 @@ steps:
   - yarn install --immutable
   image: grafana/build-container:1.5.3
   name: initialize
+- commands:
+  - git clone "https://$${GITHUB_TOKEN}@github.com/grafana/grafana-enterprise.git"
+    --depth=1
+  - cd grafana-enterprise
+  - git tag -d $${TEST_TAG} && git push --delete origin $${TEST_TAG} && git tag $${TEST_TAG}
+    && git push origin $${TEST_TAG}
+  - cd -
+  - git remote add downstream https://github.com/grafana/$${DOWNSTREAM_REPO}.git
+  - git tag -d $${TEST_TAG} && git push --delete downstream $${TEST_TAG} && git tag
+    $${TEST_TAG} && git push downstream $${TEST_TAG}
+  environment:
+    DOWNSTREAM_REPO:
+      from_secret: downstream
+    GITHUB_TOKEN:
+      from_secret: github_token
+    TEST_TAG: v0.0.0-test
+  failure: ignore
+  image: grafana/build-container:1.5.3
+  name: trigger-test-release
+  when:
+    paths:
+      include:
+      - .drone.yml
 - image: grafana/drone-downstream
   name: trigger-enterprise-downstream
   settings:
@@ -4386,6 +4409,6 @@ kind: secret
 name: gcp_upload_artifacts_key
 ---
 kind: signature
-hmac: a14708e4946492b73da169e1d7719ced3508da27df8d1ecd1e3caf0985daad58
+hmac: f8ee7ebfe0dd8221b71c0f0d01fa7dfd41be01526959c35b6f2eb4069babbf51
 
 ...

scripts/drone/pipelines/main.star

@@ -1,6 +1,7 @@
 load(
     'scripts/drone/steps/lib.star',
     'download_grabpl_step',
+    'build_image',
     'initialize_step',
     'lint_drone_step',
     'lint_backend_step',
@@ -60,6 +61,9 @@ load(
     'docs_pipelines',
 )
 
+load('scripts/drone/vault.star', 'from_secret')
+
+
 ver_mode = 'main'
 
 def get_steps(edition, is_downstream=False):
@@ -77,6 +81,7 @@ def get_steps(edition, is_downstream=False):
         test_frontend_step(),
     ]
     build_steps = [
+        trigger_test_release(),
         enterprise_downstream_step(edition=edition),
         build_backend_step(edition=edition, ver_mode=ver_mode, is_downstream=is_downstream),
         build_frontend_step(edition=edition, ver_mode=ver_mode, is_downstream=is_downstream),
@@ -150,6 +155,33 @@ def get_steps(edition, is_downstream=False):
 
     return test_steps, build_steps, integration_test_steps, windows_steps, store_steps
 
+def trigger_test_release():
+    return {
+        'name': 'trigger-test-release',
+        'image': build_image,
+        'environment': {
+            'GITHUB_TOKEN': from_secret('github_token'),
+            'DOWNSTREAM_REPO': from_secret('downstream'),
+            'TEST_TAG': 'v0.0.0-test',
+        },
+        'commands': [
+            'git clone "https://$${GITHUB_TOKEN}@github.com/grafana/grafana-enterprise.git" --depth=1',
+            'cd grafana-enterprise',
+            'git tag -d $${TEST_TAG} && git push --delete origin $${TEST_TAG} && git tag $${TEST_TAG} && git push origin $${TEST_TAG}',
+            'cd -',
+            'git remote add downstream https://github.com/grafana/$${DOWNSTREAM_REPO}.git',
+            'git tag -d $${TEST_TAG} && git push --delete downstream $${TEST_TAG} && git tag $${TEST_TAG} && git push downstream $${TEST_TAG}',
+        ],
+        'failure': 'ignore',
+        'when': {
+            'paths': {
+                'include': [
+                    '.drone.yml',
+                ]
+            }
+        }
+    }
+
 def main_pipelines(edition):
     services = integration_test_services(edition)
     volumes = integration_test_services_volumes()