BUG-1025 : use correct YANG syntax to avoid yangtools warnings.
BUG-1025 : use correct YANG syntax to avoid yangtools warnings.

Change-Id: Ic47bfb0d5fddd09c62ce271e8c48b2e31893c5a8
Signed-off-by: Dana Kutenicsova <604b99339c1ffe3a50889e267f555c45413b1942@cisco.com>

inocybe/odl-bgpcep,bigdataops/bgpcep,opendaylight/bgpcep,bigdataops/bgpcep,inocybe/odl-bgpcep