Previously each command logs take_action parameters explicitly
by using @utils.log_method decorator or log.debug().
Some commands have no logging.
This commit calls a logger in the base class and
drops all logging definition from individual commands.
Closes-Bug: #1532294
Change-Id: I43cd0290a4353c68c075bade9571c940733da1be
Added following commands for volume V2 API:
volume show
volume delete
volume type show
volume type delete
snapshot show
snapshot delete
backup show
backup delete
Implements: blueprint volume-v2
Change-Id: I68bd303c194f304ad15f899d335b72a8bf3ebe10
