Run enterprise downstream after OSS CI is done (#55366)

scripts/drone/events/main.star

@@ -42,6 +42,11 @@ load(
     'publish',
 )
 
+load(
+    'scripts/drone/pipelines/trigger_downstream.star',
+    'enterprise_downstream_pipeline',
+)
+
 load('scripts/drone/vault.star', 'from_secret')
 
 
@@ -87,6 +92,7 @@ def main_pipelines(edition):
         template=drone_change_template, secret='drone-changes-webhook',
     ),
     publish(trigger, ver_mode, edition),
+    enterprise_downstream_pipeline(edition, ver_mode),
     notify_pipeline(
         name='main-notify', slack_channel='grafana-ci-notifications', trigger=dict(trigger, status=['failure']),
         depends_on=['main-test-frontend', 'main-test-backend', 'main-build-e2e-publish', 'main-integration-tests', 'main-windows', 'main-publish'],

scripts/drone/pipelines/build.star

@@ -55,8 +55,9 @@ def build_e2e(trigger, ver_mode, edition):
     build_steps = []
     if ver_mode == 'main':
         build_steps.extend([trigger_test_release()])
+    if ver_mode == 'pr':
+        build_steps.extend([enterprise_downstream_step(edition=edition, ver_mode=ver_mode)])
     build_steps.extend([
-        enterprise_downstream_step(edition=edition, ver_mode=ver_mode),
         build_backend_step(edition=edition, ver_mode=ver_mode),
         build_frontend_step(edition=edition, ver_mode=ver_mode),
         build_frontend_package_step(edition=edition, ver_mode=ver_mode),

scripts/drone/pipelines/trigger_downstream.star

@@ -0,0 +1,28 @@
+load(
+    'scripts/drone/steps/lib.star',
+    'enterprise_downstream_step',
+)
+
+load(
+    'scripts/drone/utils/utils.star',
+    'pipeline',
+)
+
+trigger = {
+    'event': ['push',],
+    'branch': 'main',
+    'paths': {
+        'exclude': [
+            '*.md',
+            'docs/**',
+            'latest.json',
+        ],
+    },
+}
+
+def enterprise_downstream_pipeline(edition, ver_mode):
+    steps = [enterprise_downstream_step(edition, ver_mode)]
+    deps = ['main-publish']
+    return pipeline(
+                name='main-trigger-downstream', edition=edition, trigger=trigger, services=[], steps=steps, depends_on=deps
+        )