Description of problem:
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The OCP on RHV can be executed by rootless user. However, we must make sure the CA file contain the right permissions. 


Bad scenario example:
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    User imported the CA /etc/pki/ca-trust/source/anchors/${MYCA}.pem and kept only owner as read/write. 

Example:
    rw-------. root:root  /etc/pki/ca-trust/source/anchors/ca.pem


In that case, root can read the list of CA trusted with command trust list but ordinary can't read ca.pem.


What's expected ?
--------------------------

In OCP RHV documentation, we should recommend or make a note about the right permissions.


$ sudo chmod 0644 /etc/pki/ca-trust/source/anchors/ca.pem       


Example:
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# cd /etc/pki/ca-trust/source/anchors
# ls -la engine-medogz-home.pem 
-rw-------. 1 root root 1355 May 25 13:24 engine-medogz-home.pem

# trust list | grep engine
    label: engine.medogz.home.52705

^^^^^^^ as root - all good

# sudo su douglas
$ trust list | grep engine
$                             <--------- None, bad



How to fix?
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$ sudo su -
# cd /etc/pki/ca-trust/source/anchors
# chmod 0644 engine-medogz-home.pem 


How can affect the OCP installer RHV?
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If CA cert file perm is wrong... rootless user won't be able to use it to communicate with Engine.