allow serveractive to be optional
allow serveractive to be optional

server active gives errors if used on agents that aren't using active agent calls, this prevents active check configuration update from [127.0.0.1:10051] started to fail (cannot connect to [[127.0.0.1]:10051]: [111] Connection refused) from occurring
tux-o-matic/puppet-zabbix,voxpupuli/puppet-zabbix,bastelfreak/puppet-zabbix,voxpupuli/puppet-zabbix,bastelfreak/puppet-zabbix,SoftcomInc/puppet-zabbix,SoftcomInc/puppet-zabbix,bastelfreak/puppet-zabbix,tux-o-matic/puppet-zabbix,SoftcomInc/puppet-zabbix,voxpupuli/puppet-zabbix,tux-o-matic/puppet-zabbix