Bug-865: modified BGPCEP config tests

-edited config tests to reflect changes in binding-broker config module
	https://git.opendaylight.org/gerrit/#/c/13018/

Change-Id: Ibdf28b9df4908500e178453b727f35c7e9b93243
Signed-off-by: Milos Fabian <milfabia@cisco.com>