Make it possible to pass -q "metadata.field=value"

Currently the regex doesn't account for the "."

Change-Id: Ia01bb3e2a79e54fd01b0b6fa5437827694d4fb96
Signed-off-by: Angus Salkeld <asalkeld@redhat.com>
v2 API: added resource-show.

Added resource-show command for v2 API.

blueprint more-cli-cmd.

Change-Id: I9e0dcff63b2ac6650094d47a947a2deaaea2ba4d