Headless Services: Adding option to specify None for PortalIP

pkg/api/validation/validation_test.go

@@ -1134,6 +1134,13 @@ func TestValidateService(t *testing.T) {
 			},
 			numErrs: 1,
 		},
+		{
+			name: "invalid portal ip",
+			makeSvc: func(s *api.Service) {
+				s.Spec.PortalIP = "invalid"
+			},
+			numErrs: 1,
+		},
 		{
 			name: "missing port",
 			makeSvc: func(s *api.Service) {
@@ -1191,6 +1198,20 @@ func TestValidateService(t *testing.T) {
 			},
 			numErrs: 0,
 		},
+		{
+			name: "valid portal ip - none ",
+			makeSvc: func(s *api.Service) {
+				s.Spec.PortalIP = "None"
+			},
+			numErrs: 0,
+		},
+		{
+			name: "valid portal ip - empty",
+			makeSvc: func(s *api.Service) {
+				s.Spec.PortalIP = ""
+			},
+			numErrs: 0,
+		},
 	}
 
 	for _, tc := range testCases {