Various fixes, comments and improvements

Most important - selinux is disabled at once
Hostname never ends with dash
Commented info for future Fedora support
Merge branch 'master' of git://github.com/pitr-ch/kvizer

* 'master' of git://github.com/pitr-ch/kvizer:
  rename "clean installation" to clean-installation
Merge remote-tracking branch 'origin/fix-rhel63-after-pulp2'

* origin/fix-rhel63-after-pulp2:
  fix package2 job to support rhel
  fix git checkout
  comment out pulp-server service restart
  fix of pulp2 config file renamed
  add add-katello-repos job by extracting from install-katello
  fix posgresql running test

Conflicts:
	jobs.rb
Disable selinux job

When migrating production server to development machine
update comments on Fedora17 fixes
Merge branch 'ares-master'

* ares-master: (3 commits)
  update comments on Fedora17 fixes
  ...