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/dev/bin/onos-local-log b/tools/dev/bin/onos-local-log
index ea93d7f..a17d3b9 100755
--- a/tools/dev/bin/onos-local-log
+++ b/tools/dev/bin/onos-local-log
@@ -2,7 +2,7 @@
 # ----------------------------------------------------------------------------
 # Continuously watches the Apache Karaf log; survives 'karaf clean'
 # ----------------------------------------------------------------------------
-KARAF_LOG=${KARAF_LOG:-~/apache-karaf-3.0.2/data/log/karaf.log}
+KARAF_LOG=${KARAF_LOG:-~/apache-karaf-$KARAF_VERSION/data/log/karaf.log}
 
 while true; do
     [ ! -f $KARAF_LOG ] && sleep 2 && continue