ONOS-1323 Upgrading environment to use Apache Karaf 3.0.3

Requires restart of any dev shell sessions that may have KARAF_VERSION=3.0.2 already set.

Developers that have their own local Karaf will have to run 'onos-setup-karaf <ip-address>' command

Change-Id: Iba234b3cd5af89de6dd249c97cac97525364cc34
diff --git a/tools/test/topos/onos.py b/tools/test/topos/onos.py
index dac37c4..cdad6da 100755
--- a/tools/test/topos/onos.py
+++ b/tools/test/topos/onos.py
@@ -36,7 +36,7 @@
         #self.checkListening()
 
         self.onosDir = onosDir
-        self.karafDir = onosDir + 'apache-karaf-3.0.2/'
+        self.karafDir = onosDir + 'apache-karaf-3.0.3/'
         self.instanceDir = self.karafDir
 
         # add default modules