feat: get metasrv clusterinfo #14965

Job	Run time
Clippy	2m 18s
Check (windows-latest)	6m 17s
Build GreptimeDB binaries (ubuntu-20.04)	4m 55s
Check (ubuntu-20.04)	2m 9s
coverage	13m 36s
Rustfmt	43s
Toml Check	44s
Spell Check with Typos	19s
Sqlness Test with Kafka Wal (ubuntu-20.04)	2m 27s
Sqlness Test (ubuntu-20.04)	5m 49s
Compatibility Test	2m 10s
Fuzz Test (fuzz_create_table)	9m 33s
Fuzz Test (fuzz_alter_table)	9m 23s
Fuzz Test (fuzz_create_database)	9m 37s
	1h 10m 0s

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