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/build/envDefaults b/tools/build/envDefaults
index d6893d0..24cab2f 100644
--- a/tools/build/envDefaults
+++ b/tools/build/envDefaults
@@ -5,7 +5,7 @@
 
 # M2 repository and Karaf gold bits
 export M2_REPO=${M2_REPO:-~/.m2/repository}
-export KARAF_VERSION=${KARAF_VERSION:-3.0.2}
+export KARAF_VERSION=${KARAF_VERSION:-3.0.3}
 export KARAF_ZIP=${KARAF_ZIP:-~/Downloads/apache-karaf-$KARAF_VERSION.zip}
 export KARAF_TAR=${KARAF_TAR:-~/Downloads/apache-karaf-$KARAF_VERSION.tar.gz}
 export KARAF_DIST=$(basename $KARAF_ZIP .zip)