NO-JIRA: Add static.Logger() so new code can use non-static patterns.

Add static.Logger() so that the static logger can be passed as an
argument. Allows old code using the static log pattern to be extended
with new code using log argument passing.

log/static/static.go

@@ -25,6 +25,13 @@ func SetLogger(replacement logr.Logger) {
 	logger = replacement
 }
 
+// Logger returns the static logger instance.
+func Logger() logr.Logger {
+	lock.RLock()
+	defer lock.RUnlock()
+	return logger
+}
+
 // WithName returns a logger with name added to the component.
 // This uses the static logger instance.
 func WithName(name string) logr.Logger {