XDCR performance tests failed while starting replication

XDCR daily performance tests hit the issue consistently. The last good run was running with build 7.1.0-1572.

Build: 7.1.0-1658

Job: http://perf.jenkins.couchbase.com/job/triton/43026/

Logs: https://s3.amazonaws.com/bugdb/jira/qe/collectinfo-2021-11-09T212204-ns_1%40triton-srv-01-ip6.perf.couchbase.com.zip

2021-11-09T20:09:18 [INFO] Adding a remote cluster: triton-srv-03-ip6.perf.couchbase.com

2021-11-09T20:09:18 [INFO] Starting replication with parameters {'replicationType': 'continuous', 'fromBucket': 'bucket-1', 'toBucket': 'bucket-1', 'toCluster': 'perf'}

2021-11-09T20:09:18 [WARNING] ["Unexpected server error, request logged."]

2021-11-09T20:09:18 [WARNING] Retrying http://triton-srv-01-ip6.perf.couchbase.com:8091/controller/createReplication

2021-11-09T20:09:28 [WARNING] ["Unexpected server error, request logged."]

2021-11-09T20:09:28 [WARNING] Retrying http://triton-srv-01-ip6.perf.couchbase.com:8091/controller/createReplication

...

2021-11-09T20:12:38 [ERROR] Request http://triton-srv-01-ip6.perf.couchbase.com:8091/controller/createReplication failed after 20 attempts