CI: Replace enterprise check (#62359)

* Add steps in the pipeline for cloning enterprise when running PR tests.
* Removed enterprise-check from the github action workflows, and removed it from the codeowners file.

scripts/drone/pipelines/integration_tests.star

@@ -6,6 +6,7 @@ load(
     "scripts/drone/steps/lib.star",
     "compile_build_cmd",
     "download_grabpl_step",
+    "enterprise_setup_step",
     "identify_runner_step",
     "mysql_integration_tests_step",
     "postgres_integration_tests_step",
@@ -23,12 +24,13 @@ load(
     "pipeline",
 )
 
-def integration_tests(trigger, prefix):
+def integration_tests(trigger, prefix, ver_mode = "pr"):
     """Generate a pipeline for integration tests.
 
     Args:
       trigger: controls which events can trigger the pipeline execution.
       prefix: used in the naming of the pipeline.
+      ver_mode: defines the event / origin of this build. In this function, if it is set to pr, then it will attempt to clone grafana-enterprise. Otherwise it has no effect.
 
     Returns:
       Drone pipeline.
@@ -38,12 +40,26 @@ def integration_tests(trigger, prefix):
     services = integration_test_services(edition = "oss")
     volumes = integration_test_services_volumes()
 
-    init_steps = [
+    init_steps = []
+
+    verify_step = verify_gen_cue_step()
+    verify_jsonnet_step = verify_gen_jsonnet_step()
+
+    if ver_mode == "pr":
+        # In pull requests, attempt to clone grafana enterprise.
+        init_steps.append(enterprise_setup_step())
+
+        # Ensure that verif_gen_cue happens after we clone enterprise
+        # At the time of writing this, very_gen_cue is depended on by the wire step which is what everything else depends on.
+        verify_step["depends_on"].append("clone-enterprise")
+        verify_jsonnet_step["depends_on"].append("clone-enterprise")
+
+    init_steps += [
         download_grabpl_step(),
         compile_build_cmd(),
         identify_runner_step(),
-        verify_gen_cue_step(),
-        verify_gen_jsonnet_step(),
+        verify_step,
+        verify_jsonnet_step,
         wire_install_step(),
     ]