Adjust timeouts for feature flags suite

Author: HoloRin

deps/rabbit/BUILD.bazel

@@ -426,7 +426,6 @@ rabbitmq_integration_suite(
 
 rabbitmq_integration_suite(
     name = "feature_flags_SUITE",
-    size = "medium",
     matrix = {
         "registry": {
             "groups": ["registry"],
@@ -440,6 +439,7 @@ rabbitmq_integration_suite(
         "enabling_in_cluster": {
             "groups": ["enabling_in_cluster"],
             "flaky": True,
+            "size": "large",
             # The enabling_* tests chmod files and then expect writes to be blocked.
             # This probably doesn't work because we are root in the remote docker image.
             "tags": ["exclusive"],