L2SS-331: Only allow to transistion to init from off

devices/devices/hardware_device.py

@@ -102,7 +102,7 @@ class hardware_device(Device, metaclass=AbstractDeviceMetas):
     # --------
 
     @command()
-    @only_in_states([DevState.FAULT, DevState.OFF])
+    @only_in_states([DevState.OFF])
     @DebugIt()
     @fault_on_error()
     @log_exceptions()

devices/devices/observation.py

@@ -62,7 +62,7 @@ class Observation(Device):
 
     # Lifecycle functions
     @command(dtype_in = DevString)
-    @only_in_states([DevState.FAULT, DevState.OFF])
+    @only_in_states([DevState.OFF])
     @log_exceptions()
     def Initialise(self, parameters: DevString = None):
         self.set_state(DevState.INIT)

devices/devices/observation_control.py

@@ -123,7 +123,7 @@ class ObservationControl(Device):
 
     # Lifecycle functions
     @command()
-    @only_in_states([DevState.FAULT, DevState.OFF])
+    @only_in_states([DevState.OFF])
     @log_exceptions()
     @DebugIt()
     def Initialise(self):