Central AZ cluster name determination incorrect

[apconole]

When starting a simple cluster with ovn_cluster.sh start I get a message about a pod not found and
the cluster doesn't start.

Ex:

[root@localhost ovn-fake-multinode]# ./ovn_cluster.sh start
Starting OVN cluster
Waiting for containers to be up..
Adding ovs-ports
/etc/ovn/ovnnb_db.db does not exist ... (warning).
Creating empty database /etc/ovn/ovnnb_db.db [ OK ]
Starting ovsdb-nb [ OK ]
/etc/ovn/ovnsb_db.db does not exist ... (warning).
Creating empty database /etc/ovn/ovnsb_db.db [ OK ]
Starting ovsdb-sb [ OK ]
Starting ovn-northd [ OK ]
Error: no container with name or ID "ovn-central-az1-1" found: no such container

Bisected to commit af24758 ('Remove "-1" suffix to central container name for standalone-db scenario')

[dceara]

Fixed through #96