EOS related changes for L2GW
This change makes sure that whenever entity ownership change
occurs, l2gw connection and elan dpn interfaces information
is populated in the config datastore. A delay is specified
so that the 3 node odl cluster stablizes before EOS owner
for elan is selected.
This change covers a corner case where originally we could
have missed some updates that were triggered during eos
change.
Change-Id: Id1a6125edcf580f3621cd85c070e56fe09822f01
Signed-off-by: manojna v <manojna.vijayakrishna@ericsson.com>