Merge branch 'bridge-color-json' into next

Stephen Hemminger  says:

====================

From: Stephen Hemminger <sthemmin@microsoft.com>

This set of patches adds color and full JSON support to bridge command.

The output format for bridge link command changes so that
  $ bridge link show
and
  $ ip link show
use same basic format.

The "-c" flag to bridge changes from shortened form of "-compressvlan"
to shortened form of "-color".  Once again this is so that ip
and bridge command take similar options.

Lastly the JSON output format changes slightly but this
could not impact any real user, because in several cases
the current format was invalid JSON!

====================

Signed-off-by: David Ahern <dsahern@gmail.com>