Changed default branch to master in the master branch

Issue-ID: CPS-571
Signed-off-by: Renu Kumari <renu.kumari@bell.ca>
Change-Id: I0a3587b99e585d27b0127b934e9bfefdebc6227d
diff --git a/.gitreview b/.gitreview
index 76242d9..26b3266 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,4 +3,4 @@
         host=gerrit.onap.org
         port=29418
         project=cps/ncmp-dmi-plugin
-        defaultbranch=istanbul
+        defaultbranch=master