Use task queue kind instead of name prefix for nexus metrics #25947

Job	Run time
Test setup	18s
Pre-build for cache	1m 48s
Mixed brain test	7m 58s
Misc checks	4m 6s
Unit test	7m 23s
Integration test	4m 8s
Functional test (cass_es, xdc)	10m 9s
Functional test (cass_es, shard2)	14m 29s
Functional test (cass_os2, smoke)	3m 55s
Functional test (cass_es, shard1)	17m 3s
Functional test (cass_es, shard0)	17m 5s
Functional test (cass_es, ndc)	3m 39s
Functional test (cass_os3, smoke)	6m 32s
Functional test (cass_es8, smoke)	3m 43s
Functional test (postgres12, shard0)	16m 13s
Functional test (postgres12, ndc)	3m 21s
Functional test (postgres12, xdc)	9m 22s
Functional test (mysql8, smoke)	3m 10s
Functional test (postgres12, shard1)	15m 26s
Functional test (postgres12_pgx, smoke)	3m 7s
Functional test (sqlite, smoke)	2m 55s
Functional test (postgres12, shard2)	11m 36s
Test Status	2s
Notify Slack on Failure	0s
	2h 47m 28s

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