Use K8S_PROJECT instead application_id (#5138)

Signed-off-by: Javan Lacerda <javanlacerda@google.com>

Author: javanlacerda

src/clusterfuzz/_internal/k8s/service.py

@@ -176,7 +176,7 @@ def __init__(self, k8s_config_loaded: bool = False):
   def _load_gke_credentials(self):
     """Loads GKE credentials and configures the Kubernetes client."""
     credentials, _ = google.auth.default()
-    project = utils.get_application_id()
+    project = environment.get_value('K8S_PROJECT')
     service = discovery.build('container', 'v1', credentials=credentials)
     parent = f'projects/{project}/locations/-'