Use access interface in ep declare preferentially if present.
Use access interface in ep declare preferentially if present.

Change-Id: Ia32c9333154353a33f9c4e566491e68b0f71d92d
Signed-off-by: Rob Adams <dc34e1981fc17062c98433ad1bfcab20a4e3a66c@readams.net>

opendaylight/opflex,opendaylight/opflex,opendaylight/opflex,opendaylight/opflex