Fix for proper plugin package generation
Fix for proper plugin package generation

Remove previously generated documentation
Remove previously downloaded packages

Change-Id: Idd6dff08c23e0ed238576ee1aec865cad8ad4073

stackforge/fuel-plugin-external-zabbix,stackforge/fuel-plugin-external-zabbix,stackforge/fuel-plugin-external-zabbix,stackforge/fuel-plugin-external-zabbix