Allow for reinitialising of the TA cert #2858

Job	Run time
softhsm2-test (1.74.0, hsm,hsm-tests-pkcs11)	5m 32s
pykmip-test (1.74.0, hsm)	5m 43s
softhsm2-test (stable, hsm,hsm-tests-pkcs11)	4m 57s
build (ubuntu-latest, 1.74.0, --no-default-features)	3m 3s
pykmip-test (1.74.0, hsm,hsm-tests-kmip)	6m 17s
softhsm2-test (beta, hsm,hsm-tests-pkcs11)	4m 54s
build (ubuntu-latest, 1.74.0)	3m 2s
pykmip-test (stable, hsm)	5m 9s
build (ubuntu-latest, 1.74.0, --features all)	3m 3s
pykmip-test (stable, hsm,hsm-tests-kmip)	5m 40s
build (ubuntu-latest, stable, --no-default-features)	3m 1s
pykmip-test (beta, hsm)	4m 57s
build (ubuntu-latest, stable)	3m 1s
pykmip-test (beta, hsm,hsm-tests-kmip)	5m 28s
build (ubuntu-latest, stable, --features all)	2m 45s
build (ubuntu-latest, beta, --no-default-features)	2m 57s
build (ubuntu-latest, beta)	3m 1s
build (ubuntu-latest, beta, --features all)	3m 3s
	1h 15m 33s

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