These mirror the 'cinder group-type-*' commands, with arguments copied
across essentially verbatim. The only significant departure is the
merging of some commands, such as 'group-type-default' and
'group-type-list' into 'group type list', and 'group-type-update' and
'group-type-key' into 'group type set/unset'.
volume group type create
volume group type delete
volume group type list
volume group type show
volume group type set
volume group type unset
Change-Id: Iee6ee2f1f276e6ef6f75a74f8f2980f14c0d5e2f
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>