Load properties from specificed directory.
Must be created environment var with new directory and added new entry in web.xml:
<env-entry>
     <env-entry-name>igzPropertiesFolder</env-entry-name>
     <env-entry-value>my.environment.directory.var</env-entry-value>
     <env-entry-type>java.lang.String</env-entry-type>
</env-entry>