Unsorted arrays can cause issues with gluster volume commands

[mdurell]

Affected Puppet, Ruby, OS and module versions/distributions

• Puppet: 4.9.4
• Ruby: 2.1.9p490 (2016-03-30 revision 54437)
• Distribution: RHEL 7
• Module version: current master and all previous releases

How to reproduce (e.g Puppet code you use)

Change the order but not the membership of bricks in a volume.

What are you seeing

gluster volume commands fail because there is no real change to the underlying subsystem. The commands run but return an error.

What behaviour did you expect instead

I expect nothing to happen unless the brick membership changes

Output log

Sorry, I lost this when I was debugging.

Any additional information you'd like to impart

I have a simple patch I will submit against this issue as a pull request.