Store epoch in MaxAge (#3485) #12789

Job	Run time
check	4m 50s
cargo-test-sbf (token/program)	10m 5s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	21m 18s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	14m 1s
test (single-pool/cli, single-pool/program)	21m 41s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	11m 35s
test (token-upgrade/cli, token-upgrade/program)	20m 17s
cargo-test-sbf (token-upgrade/program)	10m 18s
cargo-test-sbf (feature-proposal/program)	10m 24s
cargo-test-sbf (governance/addin-mock/program, governance/program)	14m 7s
cargo-test-sbf (memo/program)	8m 4s
cargo-test-sbf (name-service/program)	9m 38s
cargo-test-sbf (stake-pool/program)	14m 39s
cargo-test-sbf (single-pool/program)	11m 10s
	3h 2m 7s

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