Use real capabilites for all volume type instead of fake ones

Replace fake capabilities requirements in all volume type extra
spec with real capabilites that Cinder/iSCSI driver would report.

Previous fix in I0e226c14df95097cfdf653f0a13a45b8acff39da isn't
complete, this change should cover all.

fix bug: 1098017

Change-Id: Ie59b11de5e8673e0414b08c5570a14f5cf69a246
Merge "Use real capabilites for all volume type instead of fake ones"