Allow for reinitialising of the TA cert #2862

Job	Run time
pykmip-test (1.74.0, hsm)	5m 6s
build (ubuntu-latest, 1.74.0, --no-default-features)	6m 54s
pykmip-test (1.74.0, hsm,hsm-tests-kmip)	5m 6s
softhsm2-test (1.74.0, hsm,hsm-tests-pkcs11)	4m 39s
pykmip-test (stable, hsm)	5m 4s
build (ubuntu-latest, 1.74.0)	9m 28s
softhsm2-test (stable, hsm,hsm-tests-pkcs11)	4m 20s
pykmip-test (stable, hsm,hsm-tests-kmip)	4m 57s
build (ubuntu-latest, 1.74.0, --features all)	8m 56s
softhsm2-test (beta, hsm,hsm-tests-pkcs11)	4m 35s
pykmip-test (beta, hsm)	5m 7s
build (ubuntu-latest, stable, --no-default-features)	6m 31s
pykmip-test (beta, hsm,hsm-tests-kmip)	4m 50s
build (ubuntu-latest, stable)	8m 55s
build (ubuntu-latest, stable, --features all)	9m 26s
build (ubuntu-latest, beta, --no-default-features)	6m 14s
build (ubuntu-latest, beta)	8m 44s
build (ubuntu-latest, beta, --features all)	7m 46s
	1h 56m 38s

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