Add pygit2 support to git fileserver backend
Add gitfs_provider to master config file template

Also moved a paragraph that seemed to be out of place
Add gitfs configuration parameters to master config docs

This commit adds the new gitfs_provider parameter, as well as several
other params for gitfs that were not documented.
Make gitfs prefer pygit2 if gitfs_provider not specified
Fix port_bindings for docker.start function
Fix documentation related to docker port_bindings
Fix 7079 mount.mounted state leaves conflicting lines in /etc/fstab
Making PEP8 compliant
not env when minion not in the top.sls
add modules: rsync
change rsync module

change `sour`、`dest` to `src`、`dst`
fix check_state_result
add modules: rsync

Fixed Conflicts
How to use pillar maps as environments

Example of how to use a pillar map as an environment for a command.
Trivial typo fix (passwd->passed)
Update at.py
Create at.py
Update at.py
Update at.py
Modify footnotes