Update HACKING.rst with release note requirement

New patches to python-cinderclient must now add an entry for release
notes.

Change-Id: Id7fe24f2cabf4145933e0babc6641d250165ce74
Fix string representation of VolumeBackupsRestore

Change string representation of VolumeBackupsRestore to use
volume_id rather than non-existent VolumeBackupsRestore id.

Change-Id: I7b585d0de9b3b0511e7fd1a70b214090a17dfa93
Closes-Bug: #1255488
Fix typo in cinderclient

sematics --> semantics
hypen-separated --> hyphen-separated
typicaly --> typically

Change-Id: I5df277ef7036082d0e4b079c23d41da809e5270f
Closes-Bug: #1254587
Add assert to delete multiple test

Make sure calls are made to delete both volumes. Also removed redundant
fields in v1 fake volume.

Closes-Bug: #1253142
Change-Id: I51078041c6d765f28edb155d44928286ee2b0dd6
Merge "Fix string representation of VolumeBackupsRestore"
Merge "Update HACKING.rst with release note requirement"
Merge "Add assert to delete multiple test"