Fix proxy service not being enabled
Fix proxy service not being enabled

service enable is not available for RedHat-5.x.
Prior to this commit, the manifest only enabled the proxy service
for >Redhat-5.x, but not for other operating systems.

tux-o-matic/puppet-zabbix,voxpupuli/puppet-zabbix,voxpupuli/puppet-zabbix,tux-o-matic/puppet-zabbix,tux-o-matic/puppet-zabbix,voxpupuli/puppet-zabbix