token 2022: add support for additional signers in test init functions #4030

Job	Run time
cargo-build-test-cli	18m 46s
cargo-test-sbf	14m 16s
cargo-test-sbf-associated-token-account	9m 21s
cargo-test-sbf-transfer-hook	8m 43s
cargo-test-sbf-twoxtx	12m 53s
cargo-test-token-2022-serde	3m 3s
js-test	10m 54s
cargo-build-test-transfer-hook-cli	12m 39s
	1h 30m 35s

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