Bug#37611414: rpl_nogtid.rpl_server_uuid consistently failing on PB2

Description:
------------
The rpl_nogtid.rpl_server_uuid test fails to match the
expected error message in the source's error log when the
replication forum consists of two replicas with the same UUID.
Although the source correctly detects replicas with duplicated
UUID and exhibits the expected behavior, the error message
produced differs from the one expected in the test assertion.

Analysis:
---------
This behavior is expected as the error message produced by the
source during detection of a dump thread with the same UUID
has been modified within the changeset for Bug#25330090.

Fix:
----
Update the $assert_select in rpl_nogtid.rpl_server_uuid test
to match error message for the
ER_RPL_KILL_OLD_DUMP_THREAD_ENCOUNTERED error.

Change-Id: I1aca5fb3fbed5794df5e1bc2aea4cf36242f2960

Author: Lukasz Gniadzik

mysql-test/suite/rpl_nogtid/t/rpl_server_uuid.test

@@ -269,7 +269,7 @@ eval CHANGE REPLICATION SOURCE TO
 # Grep only after the message that the server_2 has connected to the master
 --let $assert_only_after=Start binlog_dump to source_thread_id\($replica_thread_id\)
 --let $assert_count= 1
---let $assert_select=found a zombie dump thread with the same UUID
+--let $assert_select=Upon reconnection with the replica, while initializing the dump thread for.*, an existing dump thread with the same.* was detected.*
 --let $assert_text= Found the expected line in master's error log for server 2 disconnection
 --source include/assert_grep.inc