remote-user: Fix .conf migration in %post

If the remote-user auth plug-in is installed but is not enabled at the
time of an upgrade, its httpd configuration file may not be present.  In
order to avoid causing an error during a package upgrade, only modify
the file if it is present.
openshift_facts.rb: sort cart_list
oo-accept-broker: check httpd_execmem

Add httpd_execmem to the list of Booleans that check_selinux_booleans
checks.
Fixing comprehensive doc to include latest changes in broker/node setup.
Fixing openshift-origin-auth-remote-user-* for Apache 2.2 and 2.4
Fixing openshift-origin-console.spec to include missing gems
Merge pull request #3218 from kraman/docs

Merged by openshift-bot
Merge pull request #3064 from Miciah/oo-accept-broker-check_selinux_booleans-check-httpd_execmem

Merged by openshift-bot
Merge pull request #2758 from Miciah/openshift-facts.rb-sort-cart_list

Merged by openshift-bot
Merge pull request #2941 from Miciah/fix-plugins-auth-remote-user-post-scriptlet

Merged by openshift-bot