feat: adds information_schema cluster_info table #15701

Job	Run time
Check (windows-latest)	15m 48s
Check (windows-latest)	15m 48s
Build GreptimeDB binaries (ubuntu-20.04)	13m 32s
Build GreptimeDB binaries (ubuntu-20.04)	13m 32s
Check (ubuntu-20.04)	8m 54s
Check (ubuntu-20.04)	8m 54s
Check typos and docs	10s
Check typos and docs	10s
Clippy	9m 3s
Clippy	9m 3s
coverage	16m 53s
coverage	16m 53s
Rustfmt	1m 19s
Rustfmt	1m 19s
Check License Header	1m 17s
Check License Header	1m 17s
Toml Check	2m 55s
Toml Check	2m 55s
Unstable Fuzz Test (unstable_fuzz_create_table_standalone)	15m 45s
Unstable Fuzz Test (unstable_fuzz_create_table_standalone)	10m 4s
Sqlness Test with Kafka Wal (ubuntu-20.04)	3m 19s
Sqlness Test with Kafka Wal (ubuntu-20.04)	3m 19s
Fuzz Test (fuzz_create_table)	10m 12s
Fuzz Test (fuzz_create_table)	10m 12s
Sqlness Test (ubuntu-20.04)	2m 25s
Sqlness Test (ubuntu-20.04)	2m 25s
Fuzz Test (fuzz_alter_table)	10m 3s
Fuzz Test (fuzz_alter_table)	10m 3s
Fuzz Test (fuzz_create_database)	9m 57s
Fuzz Test (fuzz_create_database)	9m 57s
Fuzz Test (fuzz_create_logical_table)	9m 32s
Fuzz Test (fuzz_create_logical_table)	9m 32s
Fuzz Test (fuzz_alter_logical_table)	9m 32s
Fuzz Test (fuzz_alter_logical_table)	9m 32s
Fuzz Test (fuzz_insert)	9m 46s
Fuzz Test (fuzz_insert)	9m 46s
Fuzz Test (fuzz_insert_logical_table)	9m 43s
Fuzz Test (fuzz_insert_logical_table)	9m 43s
	5h 14m 29s

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