fix: append weighted destination only when weight is mentioned

Signed-off-by: divyansh375 <[email protected]>

rollout/trafficrouting_test.go

@@ -249,11 +249,11 @@ func TestRolloutWithExperimentStep(t *testing.T) {
 					Replicas: pointer.Int32Ptr(1),
 					Weight:   pointer.Int32Ptr(5),
 				},
-				{
-					Name:     "experiment-template-without-weight",
-					SpecRef:  "stable",
-					Replicas: pointer.Int32Ptr(1),
-				}},
+					{
+						Name:     "experiment-template-without-weight",
+						SpecRef:  "stable",
+						Replicas: pointer.Int32Ptr(1),
+					}},
 			},
 		},
 	}
@@ -281,11 +281,11 @@ func TestRolloutWithExperimentStep(t *testing.T) {
 		ServiceName:     "experiment-service",
 		PodTemplateHash: rs2PodHash,
 	},
-	{
-		Name:            "experiment-template-without-weight",
-		ServiceName:     "experiment-service-without-weight",
-		PodTemplateHash: rs2PodHash,
-	}}
+		{
+			Name:            "experiment-template-without-weight",
+			ServiceName:     "experiment-service-without-weight",
+			PodTemplateHash: rs2PodHash,
+		}}
 	r2.Status.Canary.CurrentExperiment = ex.Name
 
 	f.kubeobjects = append(f.kubeobjects, rs1, rs2, canarySvc, stableSvc)
@@ -1054,4 +1054,4 @@ func TestDynamicScalingDecreaseWeightAccordingToStableAvailabilityWhenAbortedAnd
 	f.fakeTrafficRouting.On("RemoveManagedRoutes", mock.Anything, mock.Anything).Return(nil)
 	f.fakeTrafficRouting.On("VerifyWeight", mock.Anything).Return(pointer.BoolPtr(true), nil)
 	f.run(getKey(r1, t))
-}
+}