Fix to arm metadata unit test

updating arm metadata unit test to correctly check for the default gripper state of the arm. The default state used to be completely closed but has since been changed to be in a slightly opened configuration by default.

unity/Assets/UnitTests/TestStretchArmMeta.cs

@@ -33,7 +33,7 @@ public IEnumerator TestStretchArmGripperOpennessMetadata()
             ArmMetadata meta = armController.GenerateMetadata();
             //check meta is in correct state
             Debug.Log($"openness should be 0 but is: {meta.gripperOpennessState}");
-            Assert.AreEqual(meta.gripperOpennessState, 0);
+            Assert.AreEqual(meta.gripperOpennessState, 1);
             //now lets open the gripper a bit
             action.Clear();