Comment 5 for bug 1907081

With the system used to validate Focal in #4 I performed a upgrade to Groovy. We can then immediately verify that a unchanged Groovy package exhibits the problem:
2021-02-15T17:08:14.584Z|00014|ovsdb_idl|WARN|Forwarding_Group table in OVN_Northbound database lacks external_ids column (database needs upgrade?)
2021-02-15T17:08:14.584Z|00015|ovsdb_idl|WARN|Load_Balancer table in OVN_Northbound database lacks selection_fields column (database needs upgrade?)
2021-02-15T17:08:14.584Z|00016|ovsdb_idl|WARN|Logical_Router_Policy table in OVN_Northbound database lacks external_ids column (database needs upgrade?)
2021-02-15T17:08:14.584Z|00017|ovsdb_idl|WARN|Logical_Router_Port table in OVN_Northbound database lacks ipv6_prefix column (database needs upgrade?)
2021-02-15T17:08:14.584Z|00018|ovsdb_idl|WARN|NAT table in OVN_Northbound database lacks external_port_range column (database needs upgrade?)

After installing the Groovy package from -proposed we can confirm the schema warnings are gone:
2021-02-15T17:11:32.828Z|00010|reconnect|INFO|ssl:10.247.39.51:6641: connected
2021-02-15T17:11:32.829Z|00011|ovsdb_idl|INFO|ssl:10.247.39.51:6641: clustered database server is not cluster leader; trying another server
2021-02-15T17:11:32.830Z|00012|ovsdb_idl|INFO|ssl:10.247.39.149:16642: clustered database server is not cluster leader; trying another server
2021-02-15T17:11:32.830Z|00013|reconnect|INFO|ssl:10.247.39.51:6641: connection attempt timed out
2021-02-15T17:11:32.830Z|00014|reconnect|INFO|ssl:10.247.39.149:16642: connection attempt timed out
2021-02-15T17:11:32.830Z|00015|reconnect|INFO|ssl:10.247.39.127:6641: connecting...
2021-02-15T17:11:32.830Z|00016|reconnect|INFO|ssl:10.247.39.127:16642: connecting...
2021-02-15T17:11:32.834Z|00017|reconnect|INFO|ssl:10.247.39.127:6641: connected
2021-02-15T17:11:32.836Z|00018|reconnect|INFO|ssl:10.247.39.127:16642: connected
2021-02-15T17:11:32.836Z|00019|ovn_northd|INFO|ovn-northd lock lost. This ovn-northd instance is now on standby.
2021-02-15T17:11:32.839Z|00020|ovn_northd|INFO|ovn-northd lock acquired. This ovn-northd instance is now active.