Added item for expression rule test

eraser-base/src/test/resources/tests/ppc6/input.eraser

@@ -10,4 +10,6 @@ Rule: name="testRule46" items=["iris1_item"] [Action: SetStateFromConstant iris1
 Rule: name="testRule8" items=["iris1_item"] [Action: SetStateFromTrigger iris2_item] ;
 Rule: name="testRul118" items=["iris1_item"] [Action: SetStateFromTrigger iris2_item 2.0] ;
 Rule: name="testR8" items=["iris1_item"] [Condition: Expression (2.0<3.0)] ;
+Rule: name="testR8" items=["iris1_item"] [Condition: Expression (2.0<iris1_item)] ;
 Rule: name="testR8556" items=["iris1_item"] [Action: StateFromExpression (2.0 + 3.0) iris1_item] ;
+Rule: name="testR8556" items=["iris1_item"] [Action: StateFromExpression iris1_item iris1_item] ;

eraser-base/src/test/resources/tests/ppc6/output.eraser

 Color Item: id="iris1_item" label="Iris 1" state="121,88,68" topic="iris1_item/state" ;
 Color Item: id="iris2_item" label="Iris 2" state="121,88,68" topic="iris1_item/state" ;
 Group: id="Unknown" items=["iris1_item", "iris2_item"] ;
+Rule: name="testR8556" items=["iris1_item"] [Action: StateFromExpression iris1_item iris1_item] ;
 Rule: name="testR8556" items=["iris1_item"] [Action: StateFromExpression (2.0 + 3.0) iris1_item] ;
+Rule: name="testR8" items=["iris1_item"] [Condition: Expression (2.0<iris1_item)] ;
 Rule: name="testR8" items=["iris1_item"] [Condition: Expression (2.0<3.0)] ;
 Rule: name="testRul118" items=["iris1_item"] [Action: SetStateFromTrigger iris2_item 2.0] ;
 Rule: name="testRule8" items=["iris1_item"] [Action: SetStateFromTrigger iris2_item] ;