Set entity ownership service as mandatory true

Set entity ownership service as mandatory true

Patch v2: Disabled openflowplugin internal IT tests,
because openflowplugin module uses EOS service and there
is no implementation for In Memory Data Store. Openflowplugin
IT loads old openflowplugin implementation and In Memory Data
Store, but after making old openflowplugin clsuter aware, it uses
EntityOwnershipService, and that's where these IT tests fails,
because there is no EOS implementation for IMDS. Apart from that
these integration tests are bare minimal and we do have all these
tests upstream CSIT.

Change-Id: I8d458d8083f0a1095d6992f635f433d9117250ca
Signed-off-by: Anil Vishnoi <vishnoianil@gmail.com>
(cherry picked from commit ab1676bbf9c203dcebfdfe6098a9c0e1ea3f89e2)