Allow for reinitialising of the TA cert #2857

Job	Run time
softhsm2-test (1.74.0, hsm,hsm-tests-pkcs11)	5m 27s
pykmip-test (1.74.0, hsm)	5m 32s
softhsm2-test (stable, hsm,hsm-tests-pkcs11)	5m 6s
build (ubuntu-latest, 1.74.0, --no-default-features)	7m 0s
pykmip-test (1.74.0, hsm,hsm-tests-kmip)	6m 17s
softhsm2-test (beta, hsm,hsm-tests-pkcs11)	4m 46s
build (ubuntu-latest, 1.74.0)	9m 48s
pykmip-test (stable, hsm)	5m 15s
build (ubuntu-latest, 1.74.0, --features all)	9m 1s
pykmip-test (stable, hsm,hsm-tests-kmip)	5m 34s
build (ubuntu-latest, stable, --no-default-features)	6m 20s
pykmip-test (beta, hsm)	4m 55s
build (ubuntu-latest, stable)	8m 38s
pykmip-test (beta, hsm,hsm-tests-kmip)	5m 28s
build (ubuntu-latest, stable, --features all)	9m 25s
build (ubuntu-latest, beta, --no-default-features)	6m 17s
build (ubuntu-latest, beta)	8m 35s
build (ubuntu-latest, beta, --features all)	7m 42s
	2h 1m 6s

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