ci: Introduce installcheck-cbdb-parallel (#819) #596

Job	Run time
check-skip	1s
Build Apache Cloudberry	9m 26s
prepare-test-matrix	3s
RPM Install Test Apache Cloudberry	48s
ic-good-opt-off	25m 1s
ic-good-opt-on	29m 22s
ic-expandshrink	3m 4s
ic-singlenode	6m 42s
ic-resgroup-v2	17m 6s
ic-contrib	2m 11s
ic-gpcontrib	2m 21s
ic-fixme	1m 55s
ic-isolation2	21m 46s
ic-isolation2-crash	2m 54s
ic-parallel-retrieve-cursor	2m 58s
Generate Apache Cloudberry Build Report	1s
	2h 5m 39s

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