message: action: fix mock declaration
diff: @@ -20,7 +20,7 @@ public:
  MOCK_CONST_METHOD6(
  do_orbit, Action::Result(float, float, Action::OrbitYawBehavior, double, double, double)){};
  MOCK_CONST_METHOD0(terminate, Action::Result()){};
  - MOCK_CONST_METHOD2(set_actuator, Action::Result(int, double)){};
  + MOCK_CONST_METHOD2(set_actuator, Action::Result(int, float)){};
  MOCK_CONST_METHOD0(kill, Action::Result()){};
  MOCK_CONST_METHOD0(return_to_launch, Action::Result()){};
  MOCK_CONST_METHOD0(hold, Action::Result()){};
  