Fix OVN DBs cleanup on startup

When initializing OVN, clean up the correct database directory when
using OVN from packages (/var/lib/ovn/ instead of /opt/stack/data/ovn/).
The /opt/stack/data/ovn location is used only when building OVN from
sources, so a fresh devstack deployment with OVN packages may already
have hundreds of existing routers and ports, creating ARP collisions.

Closes-Bug: #1942201
Change-Id: Ic90d4f2f9d8aaef825ea3325c0ad8fef2a1c5e39
1 file changed