OVSDB implementation refuses to set options:peer column value
as there is no such column in the Interface table. The correct way
is to set 'options' column value to a map containing key 'peer', as
already used in ovs_lib.
Change-Id: Ib5e956f425b36f54cda017c91ac71d9d7ee9747c
Closes-Bug: 1528894