kubelet: Make service environment variables optional

pkg/api/testing/pod_specs.go

@@ -24,22 +24,26 @@ import (
 // DeepEqualSafePodSpec returns a PodSpec which is ready to be used with apiequality.Semantic.DeepEqual
 func DeepEqualSafePodSpec() api.PodSpec {
 	grace := int64(30)
+	enableServiceLinks := api.DefaultEnableServiceLinks
 	return api.PodSpec{
 		RestartPolicy:                 api.RestartPolicyAlways,
 		DNSPolicy:                     api.DNSClusterFirst,
 		TerminationGracePeriodSeconds: &grace,
 		SecurityContext:               &api.PodSecurityContext{},
 		SchedulerName:                 api.DefaultSchedulerName,
+		EnableServiceLinks:            &enableServiceLinks,
 	}
 }
 
 // V1DeepEqualSafePodSpec returns a PodSpec which is ready to be used with apiequality.Semantic.DeepEqual
 func V1DeepEqualSafePodSpec() v1.PodSpec {
 	grace := int64(30)
+	enableServiceLinks := api.DefaultEnableServiceLinks
 	return v1.PodSpec{
 		RestartPolicy:                 v1.RestartPolicyAlways,
 		DNSPolicy:                     v1.DNSClusterFirst,
 		TerminationGracePeriodSeconds: &grace,
 		SecurityContext:               &v1.PodSecurityContext{},
+		EnableServiceLinks:            &enableServiceLinks,
 	}
 }