fix: Prevent missing certificates

[sbernauer]

Description

Part of stackabletech/issues#764.

The server TLS truststore handling was actually fine and left as-is. Only LDAP and OIDC ca cert handling was affected.

Definition of Done Checklist

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Author

• Changes are OpenShift compatible
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[sbernauer]

Started https://testing.stackable.tech/view/02%20Operator%20Tests%20(custom)/job/nifi-operator-it-custom/75/

[adwk67]

LGTM - re-ran the two failed tests locally and both were 🟢 once the images had been pulled, so we probably have a timeout problem.

Suggestion: raise the timeout for the nifi cluster assert in the external-access test to 1200 (like the ldap test).

[sbernauer]

Raised the timeouts in 8c33023

[adwk67]

Thanks!