Vendor main dependencies.

vendor/github.com/go-kit/kit/metrics/internal/lv/labelvalues.go

@@ -0,0 +1,14 @@
+package lv
+
+// LabelValues is a type alias that provides validation on its With method.
+// Metrics may include it as a member to help them satisfy With semantics and
+// save some code duplication.
+type LabelValues []string
+
+// With validates the input, and returns a new aggregate labelValues.
+func (lvs LabelValues) With(labelValues ...string) LabelValues {
+	if len(labelValues)%2 != 0 {
+		labelValues = append(labelValues, "unknown")
+	}
+	return append(lvs, labelValues...)
+}