Changed TangoShutter class to distinguish FE RV BSH

* added shutter_type in config that can be
 FrontEnd SafetyShutter or Valve to deal with specific tango states.
8 jobs for !3692 with 2750-fe-shutter-to-display-error-message-on-mode-setting-error in 95 minutes and 8 seconds (queued for 1 second)
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