Disable PolicyKit on C7 KVM nodes

[vholer]

Enhancement Request

Description

Disable PolicyKit on C7 KVM node via node package, as this is as this is source of never ending problems:
http://docs.opennebula.org/5.4/intro_release_notes/release_notes/platform_notes.html#disable-policykit-for-libvirt
https://forum.opennebula.org/t/polkitd-traps-general-protection-ip-in-libmozjs-17-0-so/399

Related issue:
#1625

Progress Status

• Branch created
• Code committed to development branch
• Testing - QA
• Documentation
• Release notes - resolved issues, compatibility, known issues
• Code committed to upstream release/hotfix branches
• Documentation committed to upstream release/hotfix branches

[vholer]

Changed a way to manage libvirt configuration files via Augeas on KVM nodes, disabled PolicyKit on CentOS 7. The question is, when do we want to reconfigure the service, as it's not unified now:

• EL: only on first package install, not on upgrades
• deb: even on upgrades
  (at least I guess)

The changes is only in packaging:
https://github.com/OpenNebula/packages/pull/14/files

[vholer]

Fixed EL to reconfigure even on upgrade, same as deb.