Don't need to remove keepalived custom policy on RHEL

An updated policy that is compatible with both Fedora and RHEL
is now in openstack-tripleo-image-elements.
Update selinux cherry pick revisions

The custom policy compile patch was updated to not install
selinux-policy-devel on non-RedHat distros.

The dependent keepalived policy was rebased on top of this
change.
Merge pull request #73 from rwsu/selinux-cleanup

SELinux cleanup