NO-JIRA: Add tpm2_getcap to the initrd for Clevis TPM2 functionality

[c4rt0]

The tpm2_getcap binary is required for Clevis TPM2 operations but was missing from the initrd.

See: #1656

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@c4rt0: This pull request explicitly references no jira issue.

In response to this:

The tpm2_getcap binary is required for Clevis TPM2 operations but was missing from the initrd.

See: #1656

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[jlebon]

What I meant by #1656 (comment) is that once coreos/ignition#1978 gets to RHEL, it should fix it here too. So I think instead we want to get that backported (actually to both Fedora and RHEL). And until that happens, we can denylist those tests.

[c4rt0]

What I meant by #1656 (comment) is that once coreos/ignition#1978 gets to RHEL, it should fix it here too. So I think instead we want to get that backported (actually to both Fedora and RHEL). And until that happens, we can denylist those tests.

Ouch, cool - thanks for the clarification.
I will add any related tests to denylist instead.