make index creation idempotent #6562

Job	Run time
paths-filter	4s
Steelthread	3m 19s
Datastore Consistency Tests (crdb)	2m 28s
Datastore Integration Tests (crdb)	7m 14s
Integration Tests	4m 5s
Datastore Consistency Tests (mysql)	2m 33s
Datastore Integration Tests (mysql)	1m 47s
Build Binary & Image	4m 16s
Datastore Consistency Tests (spanner)	2m 2s
Datastore Integration Tests (spanner)	1m 35s
Datastore Integration Tests (postgres, 13.8)	4m 4s
Datastore Integration Tests (postgres, 14)	2m 41s
Unit	5m 13s
Analyzers Unit Tests	44s
WASM Tests	1m 17s
Datastore Integration Tests (postgres, 15)	7m 48s
E2E	3m 21s
Datastore Integration Tests (postgres, 16)	2m 45s
Datastore Consistency Tests (postgres, 13.8)	3m 9s
Datastore Integration Tests (postgres, 17)	2m 45s
Datastore Consistency Tests (postgres, 14)	3m 1s
Datastore Integration Tests (pgbouncer, 13.8)	3m 15s
Datastore Consistency Tests (postgres, 15)	7m 29s
Generate Protobufs	0s
Datastore Integration Tests (pgbouncer, 14)	3m 3s
Datastore Consistency Tests (postgres, 16)	3m 4s
Datastore Integration Tests (pgbouncer, 15)	3m 19s
Datastore Consistency Tests (postgres, 17)	2m 59s
Datastore Integration Tests (pgbouncer, 16)	3m 1s
Datastore Integration Tests (pgbouncer, 17)	3m 0s
	1h 35m 21s

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