Double WAIT_FOR_BACKEND_SEC (#25603)

tools/run_tests/xds_k8s_test_driver/framework/infrastructure/gcp/compute.py

@@ -28,7 +28,7 @@ logger = logging.getLogger(__name__)
 
 class ComputeV1(gcp.api.GcpProjectApiResource):
     # TODO(sergiitk): move someplace better
-    _WAIT_FOR_BACKEND_SEC = 60 * 5
+    _WAIT_FOR_BACKEND_SEC = 60 * 10
     _WAIT_FOR_OPERATION_SEC = 60 * 5
 
     @dataclasses.dataclass(frozen=True)