Make sure we check ccaches in all rpcserver paths
    
    We need to verify the ccache is avcailable in all cases or finalize
    will cause us to acquire creds with the keytab which is not what we
    want.
    
    Ticket #7037
    
    Signed-off-by: Simo Sorce <simo@redhat.com>
    Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>