Update deps to Kube 1.11.3

This updates the dependencies to Kube 1.11.3 to pull in a fix allowing
requestheader auth to be used without normal client auth (which makes
things work on clusters that don't enable client auth normally, like
EKS).

vendor/github.com/go-openapi/spec/security_scheme.go

@@ -78,6 +78,7 @@ func OAuth2AccessToken(authorizationURL, tokenURL string) *SecurityScheme {
 	}}
 }
 
+// SecuritySchemeProps describes a swagger security scheme in the securityDefinitions section
 type SecuritySchemeProps struct {
 	Description      string            `json:"description,omitempty"`
 	Type             string            `json:"type"`