Upgrade to micrometer 1.0.3

Author: garyrussell

build.gradle

@@ -123,7 +123,7 @@ subprojects { subproject ->
 		jythonVersion = '2.5.3'
 		kryoShadedVersion = '3.0.3'
 		log4jVersion = '2.10.0'
-		micrometerVersion = '1.0.2'
+		micrometerVersion = '1.0.3'
 		mockitoVersion = '2.11.0'
 		mysqlVersion = '6.0.6'
 		pahoMqttClientVersion = '1.2.0'