net-mgmt/zabbix32-server: 3.2.0 -> 3.2.1

• RC scripts: add zabbix_server_paths, zabbix_agentd_paths, zabbix_proxy_paths
• Fix net-snmp depends for -agent

PR: 213380
Changes: http://www.zabbix.com/rn3.2.1.php
Submitted by: Pakhom Golynga <pg@pakhom.spb.ru> (maintainer)