haproxy_update plugin

This plugin allows the updating of HAProxy servers with the new replication set configuration.
the plugin includes a template configuration file haproxy_pg.conf.template which contains 3 pools:
general pool - connects to all servers
master pool - points to the master server
slave pool - connects to all the replica servers

the plugin can be used in the extra failover commands or to run by itself.
haproxy servers can be configured in the server section with role = 'haproxy'

Kind regards,
 - Jony