Salt Master directory structure:
/srv/salt/prod/zabbix/init.sls

init.sls file contains:

zabbix:
  pkg.installed:
    - sources:
      - zabbix: http://repo.zabbix.com/zabbix/2.0/rhel/5/x86_64/zabbix-release-2.0-1.el6.noarch.rpm


/etc/zabbix/zabbix_agentd.conf
  file.managed:
    - source: salt://prod/zabbix/zabbix-agentd.conf

zabbix-agent:
  pkg.installed:
  service.running:
    - enable: True
    - require:
      - pkg.installed: zabbix-agent