SolrYard Entity creation Access Denied

As reported by Jerry Jacob in [1] the SolrYard can encounter a

java.security.AccessControlException: access denied ("java.io.FilePermission" "

/indexes/default/

/data/index.properties" "read")

when adding the first entity to the Yard. This issue was likely introduces with the upgrade from Solr 4.2 to 4.4 as the noted "index.properties" file was not present in 4.2

To solve this the SolrYard needs to call the SolrServer within a `AccessController.doPrivileged` block

[1] http://markmail.org/message/oqj3ciib43dpyida