Description of problem: The katello-certs-check returns the command for possible operations with satellite-installer after verifying the provided files are correct.

Problem is if the parameters are relative to the position of the execution, say 

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# katello-certs-check -c  xxx.example.com.cer -r xxx.example.com.csr -k  xxx.example.com.key -b  /etc/pki/ca-trust/source/anchors/ISSUECATID_bundle_2016-2030.cer
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It returns the satellite-installer command with the same relative paths which, as the installer passed the parameters verbatim to the satellite-answers file, breaks a number of things.

-----------------
..............
To install the Satellite main server with the custom certificates, run:

    satellite-installer --scenario satellite\
                        --certs-server-cert "xxx.example.com.cer"\
                        --certs-server-cert-req "xxx.example.com.csr"\
                        --certs-server-key "xxx.example.com.key"\
                        --certs-server-ca-cert "/etc/pki/ca-trust/source/anchors/ISSUECATID_bundle_2016-2030.cer"
...............
------------------

Proposed change is to katello-certs-check to calculate the real path of the files and add them to the satellite-installer commands so the admin doesn't hit a problem later.


Version-Release number of selected component (if applicable):


How reproducible: N/A


Steps to Reproduce: N/A


Actual results: It returns the satellite-installer command with the same relative paths which, as the installer passed the parameters verbatim to the satellite-answers file, breaks a number of things.


Expected results: katello-certs-check to calculate the real path of the files and add them to the satellite-installer commands so the admin doesn't hit a problem later.


Additional info: