properly set MTU in network interface configuration files for RHEL-based distributions.
Catch common error in salt.function and warn and correct
Support multiple roots per environment for external pillars S3 and Git
Do not sync grains in grains.setval when using local mode
Propose update to master config file

Per the documentation: http://docs.saltstack.com/en/latest/ref/configuration/master.html#include-configuration  the include directive is unset by default.  As documented at the top of the master config file: "Values that are commented out but have no space after the comment are defaults that need not be set in the config. If there is a space after the comment that the value is presented as an example and is not the default."  Therefore, I propose adding a space after the comment to clarify that this is an example directive and not the default.
fix the salt.utils.expr_match

here is a new method in version `2014.7.0`, and only one caller `salt.utils.expr_match(keyid, line)` in 'salt.master.check_signing_file`. 
the caller pass keyid(the minion_id) and line(read from the autosign.conf) as sequence, but the method expr_match handles them as wrong seq.
fix it, and test it in my local env
stop log error when the gitfs verify all possible backends

Stop log error messages when testing gitfs possible backends.

this fixes #18306
Update postgres.py

When error happens, role_get should return None instead of False, or, the postgres_user.py in state will make exception.
Explicitly include stdlib csv module in esky build. Fixes missing csv module in Windows builds.
Add some new Windows build dependencies to docs.
Add versionadded tags to new pip module and state functions

Fixes #18721
More Sreq cleanup

Changing the local variable names in the last few places to be consistent
Add state.single wrapper func for salt-ssh

Ref #7903
Fix some copy pasta
Get SSHState from the correct location
Pull more from state.sls wrapper
Cleaning code #18699
Merge pull request #18748 from dmyerscough/drac-runner-recommendations

Cleaning code #18699
Merge pull request #18681 from nitti/fix-rh_ip-mtu

properly set MTU in network interface configuration files for RHEL-based distributions.
Merge pull request #18683 from cachedout/issue_17190

Catch common error in salt.function and warn and correct