Add test for vacuum completion #557

Job	Run time
Lint acceptance	41s
Validate Columnar 13	1m 24s
Validate Columnar 14	1m 25s
Validate Columnar 15	1m 22s
Validate Columnar 16	1m 25s
Build and Validate Postgres 13	2m 50s
Build and Validate Postgres 14	2m 53s
Build and Validate Spilo	0s
Build and Validate Postgres 15	2m 52s
Build and Validate Postgres 16	2m 18s
Push Spilo	0s
Benchmark Hydra Spilo image (${{ matrix.benchmark }})	0s
Push Postgres ${{ matrix.postgres }}	0s
Benchmark Hydra Postgres image (${{ matrix.benchmark }})	0s
	17m 10s

Provide feedback