Warn and reset `worker_threads` to the minimum of 3 if lower.
Double to single quotes.
Make `salt.payload.SREQ` IPv6 aware.

Since `salt.payload.SREQ` also checks for the `IPV4ONLY` attribute, which was added because of the IPv6 support, and that has proven problematic in some networks, we only set `IPV4ONLY` if IPv6 support is enabled.
salt.states.group.present system arg undocumented
Merge pull request #4635 from s0undt3ch/develop

Warn and reset `worker_threads` to the minimum of 3 if lower.
Store auth object in a standard place so it can be shared
Add file_buffer_size to minion config
Add file_recv method to master
Add cp.push function to cp module, Fix #1136
Only force to 3 if the peer interface is configured
Merge pull request #4644 from dlam26/develop

salt.states.group.present system arg undocumented
Created file for lvm state. Implmenetd vg related functions
Only warn about ppa on Ubuntu,Fix #4629
Added functions to create/remove logical volumes ref #118
Added function for creating pysical volumes. ref #118
Merge pull request #4645 from UtahDave/develop

Fix file.recurse:   - clean: True   on Windows minions.
Added comments to functions. ref #118
Fixed calls to lvdisplay salt command.
Fix file_find and file_hash in gitfs. It prevents unnecessary file transfers due to wrong hash retruns to client.
Added module comment block