Move from apache module mod_auth_kerb to mod_auth_gssapi

[jvlcek]

https://www.pivotaltracker.com/n/projects/1610127/stories/160659028

This PR is one of a set that will implement moving external authentication support from
the Apache module mod_auth_kerb to mod_auth_gssapi

Once all of the PRs are available I will remove the WIP flag

I also fixed the heredoc delimiters that rubocop did not like.

[jvlcek]

@miq-bot add_label wip

[jvlcek]

@miq-bot add_label enhancement

[jvlcek]

Removing WIP as all required PRs have been posted for review

The below is the list of related PRs which must all be merged together when this one is:

• Move from apache module mod_auth_kerb to mod_auth_gssapi manageiq-appliance#206
• Move from apache module mod_auth_kerb to mod_auth_gssapi manageiq-appliance-build#282
• Move from apache module mod_auth_kerb to mod_auth_gssapi #18014
• Move from apache module mod_auth_kerb to mod_auth_gssapi manageiq-documentation#973

[jvlcek]

@miq-bot remove_label wip
@miq-bot assign @abellotti

[jvlcek]

@miq-bot add_label hammer/yes

[jvlcek]

@gtanzillo and @abellotti I have made the update necessary to address the issue @abellotti raised when we met yesterday regarding yup update support to handle both the old, mod_auth_kerb and new mod_auth_gssapi config file syntax. This should be good to go now.

Thank you! JoeV

[miq-bot]

Checked commit jvlcek@21e5bcf with ruby 2.3.3, rubocop 0.52.1, haml-lint 0.20.0, and yamllint 1.10.0
2 files checked, 0 offenses detected
Everything looks fine. ⭐

[gtanzillo]

👍 LGTM

[jvlcek]

https://bugzilla.redhat.com/show_bug.cgi?id=1636547 will be used to track this work.

[simaishi]

Hammer backport details:

$ git log -1
commit 51b26b7a2917fa7707c8efb7e93589b6769b9814
Author: Gregg Tanzillo <[email protected]>
Date:   Fri Oct 5 16:42:46 2018 -0400

    Merge pull request #18014 from jvlcek/gssapi
    
    Move from apache module mod_auth_kerb to mod_auth_gssapi
    
    (cherry picked from commit 90853a61ff9881fb730bdbc71418286b159a0513)
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1636547