RHEL SELinux custom policy for neutron-ns-meta

neutron-ns-meta is denied connectto on unix_stream_socket on RHEL.

Fedora selinux-policy has the correct fix. That fix needs to be
applied to RHEL. We need this custom policy until it is applied.

Partial-Bug: 1375534

Change-Id: I9f3932f88c5796755fefaeedea9811b82b291635
Merge "RHEL SELinux custom policy for neutron-ns-meta"