Adds --snapshot-zstd-compression-level to agave-validator #16742

Job	Run time
cargo-test-sbf (associated-token-account)	7m 11s
check (associated-token-account)	1m 29s
cargo-test-sbf (feature-proposal)	6m 21s
test_cli (single-pool)	18m 6s
cargo-test-sbf (instruction-padding)	6m 13s
check (feature-proposal)	3m 2s
test_cli (token-2022)	17m 13s
check (instruction-padding)	2m 22s
cargo-test-sbf (memo)	6m 7s
cargo-test-sbf (record)	6m 0s
check (memo)	1m 55s
cargo-test-sbf (single-pool)	7m 28s
check (record)	55s
cargo-test-sbf (slashing)	14m 53s
cargo-test-sbf (stake-pool)	10m 12s
check (single-pool)	3m 30s
cargo-test-sbf (token-2022)	7m 50s
check (slashing)	1m 29s
check (stake-pool)	1m 54s
check (token-2022)	3m 16s
	2h 7m 26s

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