DDF-738 Added the setting of the Metacard.RESOURCE_URI in the requestProperties when calling the the Source retrieveResource methods (through the download manager classes).  It gets set from the actual Metacard.RESOURCE_URI attribute and not the value that is passed in by the user.
Merge pull request #25 from jvettraino/2.5.x-DDF-738

DDF-738 Added the setting of the Metacard.RESOURCE_URI in the requestProperties