Identifies a Replication Manager site.
                 The syntax of this parameter in the DB_CONFIG file is a
                 single line with the string
                 repmgr_site, one or more
                 whitespace characters, the host and port parameters
                 specified as a string and an integer respectively. 
                 This can optionally be followed by one or more
                 space-delimited keywords and
                 on/off. For
                 example:
            
repmgr_site example.com 49200 db_local_site on db_legacy off
Available keywords are:
                        db_bootstrap_helper
                    
                        If turned on, the identified
                        site may be used as a "helper" when the local site
                        is first joining the replication group.  Once the
                        local site has been established as a member of the
                        group, this setting is ignored. 
                    
                        db_group_creator
                    
                        If turned on, this site should
                        create the initial membership database contents,
                        defining a "group" of just the one site, rather
                        than trying to join an existing group when it
                        starts for the first time.  This setting is only
                        used on the local site, and is ignored when
                        configured on a remote site.
                    
                        db_legacy
                    
                        If turned on, specifies that the
                        site is already part of an existing group. This
                        setting causes the site to be upgraded from a
                        previous version of BDB. All sites in the legacy
                        group must specify this setting for themselves (the
                        local site) and for all other sites currently
                        existing in the group. Once the upgrade has been
                        completed, this setting is no longer required. 
                    
                        db_local_site
                    
                        If turned on, specifies that
                        this site is the local site within the replication
                        group. The application must identify exactly one
                        site as the local site before replication is
                        started.
                    
                        db_repmgr_peer
                    
                        If turned on, specifies that the
                        site may be used as a target for "client-to-client"
                        synchronization messages. This setting is ignored
                        if it is turned on for the local site. 
                    
For more information, see DB_SITE->set_config().