Simple hack to allow reading inputs on the fake Galil.

This was done for the shutter.sct on Bilby.

site_ansto/instrument/TEST_SICS/fakeGalil/galilcontroller.py

@@ -76,6 +76,8 @@ class GalilController(object):
                 response.append(" 0000000000")
             elif item == "_XQ0":
                 response.append(" 0000000123")
+            elif item[0] == "@":
+                response.append(" 1.0000")
             elif len(item) == 4 and item[0] == "_":
                 axis = arg[3]
                 param = self.motors[axis].doQuery(item[1:3])