download karaf 4.2.1 from maven central

Change-Id: Icb7e0400ee5b34ed4be33afdda5074a6f6ec1f6d
diff --git a/tools/package/bin/onos-backup b/tools/package/bin/onos-backup
index a37ee46..72746e4 100755
--- a/tools/package/bin/onos-backup
+++ b/tools/package/bin/onos-backup
@@ -5,7 +5,7 @@
 
 ONOS_HOME=${ONOS_HOME:-$(cd $(dirname $0)/.. >/dev/null 2>&1 && pwd)}
 ONOS_DEFAULT_ARCHIVE=$(dirname $ONOS_HOME)/onos-data.tar.gz
-ONOS_KARAF=$ONOS_HOME/apache-karaf-3.0.8
+ONOS_KARAF=$ONOS_HOME/apache-karaf-4.2.1
 
 # Fetch the name of the archive or use a default if none is specified
 archive=${1:-$ONOS_DEFAULT_ARCHIVE}
diff --git a/tools/package/bin/onos-restore b/tools/package/bin/onos-restore
index b7204e5..b6bc4bc 100755
--- a/tools/package/bin/onos-restore
+++ b/tools/package/bin/onos-restore
@@ -5,7 +5,7 @@
 
 ONOS_HOME=${ONOS_HOME:-$(cd $(dirname $0)/.. >/dev/null 2>&1 && pwd)}
 ONOS_DEFAULT_ARCHIVE=$(dirname $ONOS_HOME)/onos-data.tar.gz
-ONOS_KARAF=$ONOS_HOME/apache-karaf-3.0.8
+ONOS_KARAF=$ONOS_HOME/apache-karaf-4.2.1
 
 # Fetch the name of the archive or use a default if none is specified
 archive=${1:-$ONOS_DEFAULT_ARCHIVE}
diff --git a/tools/package/deb/prerm b/tools/package/deb/prerm
index 264a26c..d1cb8a1 100755
--- a/tools/package/deb/prerm
+++ b/tools/package/deb/prerm
@@ -14,7 +14,7 @@
 
 # Clean up onos runtime directories
 #      TODO don't hardcode karaf version
-rm -rf /opt/onos/apache-karaf-3.0.8/
+rm -rf /opt/onos/apache-karaf-4.2.1/
 rm -rf /opt/onos/var/*
 rm -rf /opt/onos/config
 rm -rf /opt/onos/options
diff --git a/tools/package/onos-prep-karaf b/tools/package/onos-prep-karaf
index b77d7e6..468494f 100755
--- a/tools/package/onos-prep-karaf
+++ b/tools/package/onos-prep-karaf
@@ -6,8 +6,7 @@
 set -eu -o pipefail
 
 OUT=$1
-#export HOME=/Users/tom
-KARAF_TAR="$HOME/Downloads/apache-karaf-4.2.1.tar.gz"
+KARAF_TAR=$2
 ONOS_VERSION=$3
 BRANDING=$4
 KARAF_PATCHES=$5