Mitsuhiro Tanino 4cd05c64dd Add start_version check for do_list() image_metadata option
The image_metadata options requires Cinder API v3.4, but
user can specify this option before API v3.4 then the
option will be ignored without any warning message.

We should check this option using start_version to
avoid confusion.

Change-Id: I6983494cb6653a9eaf35f4eedba87aeb70b55260
2017-02-07 19:40:30 -05:00
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