Update the "--binding-profile" option on the "port create" and
"port set" commands to support both <key>=<value> and JSON input
for the port custom binding profile data. The JSON input is
sometimes needed to maintain the value type (e.g. integer) for
more advanced data.
The port custom binding profile data is unique across neutron
so a custom argparse.Action class was created instead of
writting a generic class in osc-lib.
Change-Id: I82ac6d4f95afdc866f5282fc00d390f850f54d21
Implements: blueprint neutron-client
5cc62d90b0