Enabled paging on automount keys.
    
    The automount keys search facet has been modified to support paging.
    Since the automountkey-find command doesn't support --pkey-only
    option, the facet is configured such that during a refresh operation
    it will retrieve all entries (including the key and info attributes)
    and then display only the ones that are supposed to be visible in
    the current page.
    
    Ticket #2093