ONOS-1328 Converted ONOS features to apps.

ONOS_FEATURES env. var is now deprecated!

Cells are expected to use ONOS_APPS env. var to tailor which builtin apps should be activated by default.  All builtin apps are installed by default, but can be uninstalled if desired.

Cleaned up cell definitions accordingly.

Change-Id: If3bb4691a73543a69197f4bf1855c8368f558450
diff --git a/tools/test/bin/onos-show-cell b/tools/test/bin/onos-show-cell
index 3b11a1d..f5c7572 100755
--- a/tools/test/bin/onos-show-cell
+++ b/tools/test/bin/onos-show-cell
@@ -51,5 +51,7 @@
     fi
 done
 echo "OCN=${OCN}"
+echo "OCT=${OCT}"
 echo "OCI=${OCI}"
-echo "ONOS_FEATURES=${ONOS_FEATURES}"
+echo "ONOS_APPS=${ONOS_APPS}"
+echo "ONOS_BOOT_FEATURES=${ONOS_BOOT_FEATURES}"