Bind relay to local address rather than hostname

The use of local hostname seems to confuse later versions of
ovsdb-server; switch to implicit binding to all local addresses.

Change-Id: Ieb84177d239e02346addf0af3cf1ed1e812dbcb7

src/templates/ovn-relay-wrapper.sh.j2

@@ -27,6 +27,6 @@ ovsdb-server \
     --log-file=/var/log/ovn/ovn-relay.log \
     --pidfile=/var/run/ovn/ovn-relay.pid \
     --unixctl=/var/run/ovn/ovn_relay.sock \
-    --remote=pssl:6642:{{ ovsdb_cms.local_hostname }} relay:OVN_Southbound:$REMOTES
+    --remote=pssl:6642 relay:OVN_Southbound:$REMOTES
 
 trap stop_svc EXIT

tox.ini

@@ -98,8 +98,7 @@ commands = {[testenv:lint]commands}
 description = Check code against coding style standards
 deps =
     black
-    # flake8==4.0.1 # Pin version until https://github.com/csachs/pyproject-flake8/pull/14 is merged
-    flake8
+    flake8<6
     flake8-docstrings
     flake8-copyright
     flake8-builtins