Updated YANG model of bgp-ls nlri.
Updated YANG model of bgp-ls nlri.

Change-Id: Id4c01037db005a34592f435fb1f1fca7e3b98ae3
Signed-off-by: Dana Kutenicsova <604b99339c1ffe3a50889e267f555c45413b1942@cisco.com>

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