Added doc to contents file, fixed an error.
Add initial glusterfs module
Add start method to glusterfs module
[salt.cloud] master_minion_name referenced before assignment

Fixes error caused by 42ca06c9

[ERROR   ] There was a query error: local variable 'master_minion_name' referenced before assignment
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/salt/cloud/cli.py", line 389, in run
    ret = mapper.run_map(dmap)
  File "/usr/lib/python2.7/site-packages/salt/cloud/__init__.py", line 1611, in run_map
    if name in (master_name, master_minion_name):
UnboundLocalError: local variable 'master_minion_name' referenced before assignment
Add gluster cluster state
Add peered status
Salt ssh will overwrite the minion ID based on gathered data.

This can result in a non-matching hostname.
Make peers plural for glusterfs
Fix lint errors for gluster modules
Merge pull request #10483 from gtmanfred/fixlocal

[salt.cloud] master_minion_name referenced before assignment
use the value of __virtual__ instead of a string
Merge pull request #10487 from obestwalter/develop

use the value of __virtualname__ instead of a string
Clean up glusterfs module and state

Cleaning up a few small things.
Merge pull request #10486 from gtmanfred/glusterfs

Add glusterfs state and module
Unify the minimal libcloud version requirement.
The minimal requirement for `apache-libcloud` is now `0.14.0`.
Merge pull request #10488 from s0undt3ch/develop

Unify the minimal libcloud version requirement.
Remove unused import. Don't shaddow `peer()`.
Remove un-used import.
Merge pull request #10489 from s0undt3ch/develop

Lint fixes