ANN: Reference Policy 2.20220106

https://github.com/SELinuxProject/refpolicy/releases/tag/RELEASE_2_20220106

Notable changes:

* Module versions were dropped. Policy module versions were removed in semodule
   many years ago, so they no longer serve a purpose in the policy. The
   policy_module() macro still supports the version argument. If it is missing,
   a default version is set, to satisfy the policy syntax.
* The MCS constraints changed to reflect the usage in systems, primarily for
   separating containers and VMs. To separate a domain by MCS it will now need
   to opt in using the mcs_constrained() interface.
* New support for grouping user domains and their surrogates, e.g. user_t
   surrogates user_wm_t and user_systemd_t, such that allowing the user domain
   to domain transition to a child domain will be allowed for surrogate domains.
   See pull requests #365 and #381 for more information.

New module:
- obfs4proxy


-- 
Chris PeBenito