Applied patch from jira issue - OFBIZ-2567 - Entity VirtualProduct missing.
Thanks  Jan Valkovic for reporting the issue, Thanks Deepak for providing the patch for the same.

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1639846 13f79535-47bb-0310-9956-ffa450edef68