UNC handling for attachments

Idea created by Jeff.Gramlich on Oct 10, 2016
    Not planned
    • Louis_van_Amelsfort
    • IainLambert

    Changing data type for usm_asset.file_name to accomodate a larger character length. 

    then also add in code to allow the application to handle the '\' for UNC format when a requestor is attempting to attach a file in Service Catalog.