fixup! Update qos profile (osrf#20)

Compatibility with android

Signed-off-by: Ivan Santiago Paunovic <ivanpauno@ekumenlabs.com>

Author: ivanpauno

rcljava/src/test/java/org/ros2/rcljava/qos/QoSProfileTest.java

@@ -29,7 +29,18 @@ public class QoSProfileTest {
   @BeforeClass
   public static void setupOnce() throws Exception {
     // Just to quiet down warnings
-    org.apache.log4j.BasicConfigurator.configure();
+    try
+    {
+      // Configure log4j. Doing this dynamically so that Android does not complain about missing
+      // the log4j JARs, SLF4J uses Android's native logging mechanism instead.
+      Class c = Class.forName("org.apache.log4j.BasicConfigurator");
+      Method m = c.getDeclaredMethod("configure", (Class<?>[]) null);
+      Object o = m.invoke(null, (Object[]) null);
+    }
+    catch (Exception e)
+    {
+      e.printStackTrace();
+    }
   }
 
   @Test