Add remote_ip_prefix to tests in case of TF

According to upstream patch:
https://review.opencontrail.org/c/tungstenfabric/tf-controller/+/62278
We need to replace remote_ip_prefix with TF default values

Related-Prod: PRODX-15035
Change-Id: I6bec5a5380ec4bee5f5a674383dedabc43c540a3
(cherry picked from commit 1adb0f9f5f037b978e17377ca7051ff21d2a1570)
(cherry picked from commit 70dcd76a6bdbd61bd0496db66189458369bac431)
1 file changed