Use base utils from oslo-incubator instead copy-pasted from nova

Change-Id: Ie7bfbfdce51f5d45b51f02551a309736c3d0d752
Fix arguments order in assertEqual

Change-Id: Ib5b98cbbc0cf129d14401c8ae3800ac43550a424
Closes-bug: #1277104
Support Nova availability zones

Change-Id: Ie0812b70f50f971cf7099a85c9809733eff1599f
Implements: blueprint support-nova-availability-zones
Merge "Fix arguments order in assertEqual"
Updated from global requirements

Change-Id: I13aa43b356d74b88d94ccac3ea67457204c330b4
Updated from global requirements

Change-Id: I3983eb27142bdeb2fef7f575dffb0b69905b59fe
Updated from global requirements

Change-Id: Ie6842e39eeb65597b070eb61d9def4ea24f0071d
Support Cinder availability zones

Change-Id: I2bfdc46a49942498d43032aef5ed6c4b076933e4
Implements: blueprint support-cinder-availability-zones
Merge "Support Cinder availability zones"
Add volume_type support to node group templates

Change-Id: I38e19719f7ffd50f48217fc94bc7179928131597
Closes-Bug: #1369574
Removing runtime dependency on python pbr