Separating onos-drivers to be delivered as a separate app from onos-openflow. Apps activated by default (via onos-setup-karaf or onos-install/onos-config)  are now onos-drivers and onos-openflow.

Change-Id: I35c7cca79a4b72e966cbc2cebe72b109f2d92706
diff --git a/tools/test/bin/onos-config b/tools/test/bin/onos-config
index 0921c13..b494852 100755
--- a/tools/test/bin/onos-config
+++ b/tools/test/bin/onos-config
@@ -12,7 +12,7 @@
 export ONOS_BOOT_FEATURES="${ONOS_BOOT_FEATURES:-webconsole,onos-api,onos-core,onos-cli,onos-rest,onos-gui}"
 
 # ONOS builtin apps and providers ignited by default
-export ONOS_APPS="${ONOS_APPS:-openflow}"
+export ONOS_APPS="${ONOS_APPS:-drivers,openflow}"
 
 # Generate a cluster.json from the ON* environment variables
 CDEF_FILE=/tmp/${remote}.cluster.json