Work on #61: Add support for ICMP

+ Update dependencies

vendor/github.com/go-logr/logr/discard.go

@@ -0,0 +1,35 @@
+package logr
+
+// Discard returns a valid Logger that discards all messages logged to it.
+// It can be used whenever the caller is not interested in the logs.
+func Discard() Logger {
+	return discardLogger{}
+}
+
+// discardLogger is a Logger that discards all messages.
+type discardLogger struct{}
+
+func (l discardLogger) Enabled() bool {
+	return false
+}
+
+func (l discardLogger) Info(msg string, keysAndValues ...interface{}) {
+}
+
+func (l discardLogger) Error(err error, msg string, keysAndValues ...interface{}) {
+}
+
+func (l discardLogger) V(level int) Logger {
+	return l
+}
+
+func (l discardLogger) WithValues(keysAndValues ...interface{}) Logger {
+	return l
+}
+
+func (l discardLogger) WithName(name string) Logger {
+	return l
+}
+
+// Verify that it actually implements the interface
+var _ Logger = discardLogger{}