Merge pull request #59842 from ixdy/update-rules_go-02-2018

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

 Update bazelbuild/rules_go, kubernetes/repo-infra, and gazelle dependencies

**What this PR does / why we need it**: updates our bazelbuild/rules_go dependency in order to bump everything to go1.9.4. I'm separating this effort into two separate PRs, since updating rules_go requires a large cleanup, removing an attribute from most build rules.

**Release note**:

```release-note
NONE
```

Kubernetes-commit: 96ec3187180b9c1d722756b3ea0984ebe65424dc

vendor/k8s.io/apimachinery/pkg/apis/meta/v1/labels.go

@@ -25,34 +25,14 @@ func CloneSelectorAndAddLabel(selector *LabelSelector, labelKey, labelValue stri
 	}
 
 	// Clone.
-	newSelector := new(LabelSelector)
+	newSelector := selector.DeepCopy()
 
-	// TODO(madhusudancs): Check if you can use deepCopy_extensions_LabelSelector here.
-	newSelector.MatchLabels = make(map[string]string)
-	if selector.MatchLabels != nil {
-		for key, val := range selector.MatchLabels {
-			newSelector.MatchLabels[key] = val
-		}
+	if newSelector.MatchLabels == nil {
+		newSelector.MatchLabels = make(map[string]string)
 	}
+
 	newSelector.MatchLabels[labelKey] = labelValue
 
-	if selector.MatchExpressions != nil {
-		newMExps := make([]LabelSelectorRequirement, len(selector.MatchExpressions))
-		for i, me := range selector.MatchExpressions {
-			newMExps[i].Key = me.Key
-			newMExps[i].Operator = me.Operator
-			if me.Values != nil {
-				newMExps[i].Values = make([]string, len(me.Values))
-				copy(newMExps[i].Values, me.Values)
-			} else {
-				newMExps[i].Values = nil
-			}
-		}
-		newSelector.MatchExpressions = newMExps
-	} else {
-		newSelector.MatchExpressions = nil
-	}
-
 	return newSelector
 }