BUG-4831: container should be presence
BUG-4831: container should be presence

If we do not make it a presence container, datastore will remove it
because it is empty.

Change-Id: I2b5e3fe2aac4f3c4a72af209e091ed40f910ed96
Signed-off-by: Robert Varga <b8bd3df785fdc0ff42dd1710c5d91998513c57ef@cisco.com>

opendaylight/bgpcep