Fixes #20054 - Add test if server's certificate is PEM encoded.

[phayz]

No description provided.

[theforeman-bot]

Issues: #20054

[chris1984]

@phayz can you rebase and ill test this with a der cert I have.

[theforeman-bot]

@phayz, this pull request is currently not mergeable. Please rebase against the master branch and push again.

If you have a remote called 'upstream' that points to this repository, you can do this by running:

    $ git pull --rebase upstream master

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This message was auto-generated by Foreman's prprocessor

[chris1984]

now that is rebased, ill test with my der format certs

[chris1984]

Works:

Checking server certificate's encoding: [FAIL]
The server certificate is in DER encoding, which is incompatible.
Run the following command to convert the certificate to PEM encoding,
then test it again.
# openssl x509 -in capsule.toledo.satellite.lab.eng.rdu2.redhat.com.der -outform pem -out capsule.toledo.satellite.lab.eng.rdu2.redhat.com.der.pem

When you run kcc.sh again, use file
capsule.toledo.satellite.lab.eng.rdu2.redhat.com.der.pem for the server certificate.

Thanks @phayz