Introducing optional ability to secure the ONOS karaf shell and to use raw ssh client.

Change-Id: I48cfc922eaf980d1cb8b9182b26999ce3c26b667
diff --git a/tools/test/bin/onos-config b/tools/test/bin/onos-config
index 1a80e92..732aa8f 100755
--- a/tools/test/bin/onos-config
+++ b/tools/test/bin/onos-config
@@ -6,7 +6,8 @@
 [ ! -d "$ONOS_ROOT" ] && echo "ONOS_ROOT is not defined" >&2 && exit 1
 . $ONOS_ROOT/tools/build/envDefaults
 
-remote=$ONOS_USER@${1:-$OCI}
+node=${1:-$OCI}
+remote=$ONOS_USER@$node
 
 # ONOS boot features
 export ONOS_BOOT_FEATURES="${ONOS_BOOT_FEATURES:-webconsole,onos-api,onos-core,onos-incubator,onos-cli,onos-rest,onos-gui}"