TCPSocket could not be used as it was not checked in validation

Attempting to use it gave the error "must register one handler".
Added more tests for it.

pkg/api/validation/validation_test.go

@@ -496,6 +496,32 @@ func TestValidateContainers(t *testing.T) {
 				ImagePullPolicy: "IfNotPresent",
 			},
 		},
+		"invalid lifecycle, no tcp socket port.": {
+			{
+				Name:  "life-123",
+				Image: "image",
+				Lifecycle: &api.Lifecycle{
+					PreStop: &api.Handler{
+						TCPSocket: &api.TCPSocketAction{},
+					},
+				},
+				ImagePullPolicy: "IfNotPresent",
+			},
+		},
+		"invalid lifecycle, zero tcp socket port.": {
+			{
+				Name:  "life-123",
+				Image: "image",
+				Lifecycle: &api.Lifecycle{
+					PreStop: &api.Handler{
+						TCPSocket: &api.TCPSocketAction{
+							Port: util.IntOrString{IntVal: 0},
+						},
+					},
+				},
+				ImagePullPolicy: "IfNotPresent",
+			},
+		},
 		"invalid lifecycle, no action.": {
 			{
 				Name:  "life-123",
@@ -506,6 +532,28 @@ func TestValidateContainers(t *testing.T) {
 				ImagePullPolicy: "IfNotPresent",
 			},
 		},
+		"invalid liveness probe, no tcp socket port.": {
+			{
+				Name:  "life-123",
+				Image: "image",
+				LivenessProbe: &api.Probe{
+					Handler: api.Handler{
+						TCPSocket: &api.TCPSocketAction{},
+					},
+				},
+				ImagePullPolicy: "IfNotPresent",
+			},
+		},
+		"invalid liveness probe, no action.": {
+			{
+				Name:  "life-123",
+				Image: "image",
+				LivenessProbe: &api.Probe{
+					Handler: api.Handler{},
+				},
+				ImagePullPolicy: "IfNotPresent",
+			},
+		},
 		"privilege disabled": {
 			{Name: "abc", Image: "image", Privileged: true},
 		},