Add V3 API samples for flavor-manage,flavor-extra-specs

Partially implements bp v3-api-extension-versioning

Change-Id: I54881677005cc085e5a2a604fc83eb4225ffd5d0
Add v3 API samples for os-extended-volumes

Partially implements blueprint v3-api-unittests

Change-Id: I347b220890980a588eaecda644b15257d85b4a85
Add V3 API samples for quota-sets/class-sets,inst-usage-audit-log

Partially implements blueprint v3-api-unittests

Change-Id: I6c21e5dffc5669bb6ab2bba091b97725cc19fd69
VMware: datastore regex not honoured

Commit 9408d79e7413aadcba52a61b7a33164090785e4f did not pass the
datastore regular expression to the VMOps class. This resulted in the
configured parameter being ignored.

Fixes bug: 1222349

Change-Id: I0c7619b281662121f353c04e07331404d747b28b
Merge "VMware: datastore regex not honoured"
Merge "Add v3 API samples for os-extended-volumes"
Merge "Add V3 API samples for quota-sets/class-sets,inst-usage-audit-log"
Merge "Add V3 API samples for flavor-manage,flavor-extra-specs"