Allow the overall log level to be dynamically set.

The code was previously only changing the logging level if it wasn't the
default which is accurate for setting the log level once at startup time,
but it needs to set it unconditionally to allow dynamic updates.

config.go

@@ -134,10 +134,8 @@ func parseAndSetDebugLevels(debugLevel string) error {
 			return fmt.Errorf(str, debugLevel)
 		}
 
-		// Change the logging level for all subsystems if needed.
-		if debugLevel != defaultLogLevel {
-			setLogLevels(debugLevel)
-		}
+		// Change the logging level for all subsystems.
+		setLogLevels(debugLevel)
 
 		return nil
 	}