Add .gitreview

It's more than an help

Issue-ID: DOC-765

Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
Change-Id: I2bd2e6b3f516ccfeebf55f4806720b0430ae6005
(cherry picked from commit 0ad8738aa0a4fc21c3f5592a129d8055ceb0e6bd)
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..9bd71a9
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,5 @@
+[gerrit]
+host=gerrit.onap.org
+port=29418
+project=dmaap/datarouter.git
+defaultbranch=istanbul