Enterprise changes to the Drone pipelines (#33773)

* Enterprise changes to the Drone pipelines
This is basically a no-op in this repository, except for the fact that the grafanabot personal access token will now be fetched from Vault instead of repository secrets
This will pave the way for us to fetch all secrets from Vault

* Update star files from enterprise

* Add missingn newline

scripts/vault.star

@@ -0,0 +1,23 @@
+pull_secret = 'dockerconfigjson'
+github_token = 'github_token'
+
+def from_secret(secret):
+    return {
+        'from_secret': secret
+    }
+
+def vault_secret(name, path, key):
+    return {
+        'kind': 'secret',
+        'name': name,
+        'get': {
+            'path': path,
+            'name': key,
+        }
+    }
+
+def secrets():
+    return [
+        vault_secret(pull_secret, 'secret/data/common/gcr', '.dockerconfigjson'),
+        vault_secret(github_token, 'infra/data/ci/github/grafanabot', 'pat')
+    ]