Change the string serialization of the Nothing selector

The previous option was not serializable, and was used in questionable scenarios to represent what we also use Everything() for. The individual context needs to make the decision about everything vs nothing (and nothing has no real concept in our API today) so this seems safe.

Change the string serialization of the Nothing selector
bf200457 · Clayton Coleman · c5059bd7 · bf200457
Unverified Commit bf200457 authored Jan 22, 2017 by Clayton Coleman
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selector.go staging/src/k8s.io/apimachinery/pkg/labels/selector.go +1 -1

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--- a/staging/src/k8s.io/apimachinery/pkg/labels/selector.go
+++ b/staging/src/k8s.io/apimachinery/pkg/labels/selector.go
@@ -62,7 +62,7 @@ type nothingSelector struct{}
 func (n nothingSelector) Matches(_ Labels) bool              { return false }
 func (n nothingSelector) Empty() bool                        { return false }
-func (n nothingSelector) String() string                     { return "<null>" }
+func (n nothingSelector) String() string                     { return "" }
 func (n nothingSelector) Add(_ ...Requirement) Selector      { return n }
 func (n nothingSelector) Requirements() (Requirements, bool) { return nil, false }