Temporary turn off l3_ha in ovs/lb master/bobcat jobs

Tests fails randomly with l3_ha in openvswitch and
linuxbridge master and stable/2023.2 jobs, until the
issue is fixed let's turn off l3_ha temporary.

Related-Bug: #2037239
Change-Id: Ia23b39819834e2bc12ec7113bb841007f7cf1ff5
9 files changed