Add missing Graql steps

Author: joshua

java/test/behaviour/graql/GraqlSteps.java

@@ -86,6 +86,8 @@ public void graql_match(String query) {
     @Given("graql define throws")
     @Given("graql undefine throws")
     @Given("graql match; throws exception")
+    @Given("graql match group; throws exception")
+    @Given("graql match aggregate; throws exception")
     @Given("graql insert; throws exception")
     @Given("graql delete; throws exception")
     @Given("graql define; throws exception")