add onboarding, tosca, templates, manifest, gitreview

Change-Id: I46044088738fd220da4a4ca4ab16dca26b89830f
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..7f57aed
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,6 @@
+[gerrit]
+host=gerrit.opencord.org
+port=29418
+project=onos.git
+defaultremote=origin
+defaultbranch=master