Bump up gerrit Api version to 2.16-rc0

Align dependency to latest Gerrit release

Feature: Issue 9867
Change-Id: I61b3644760d10501e4558a2a74d43589a40fa417

build.sbt

diff --git a/build.sbt b/build.sbt
index 40b5dd8..eaeef1a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 enablePlugins(GitVersioning)
 
-val gerritApiVersion = "2.16-SNAPSHOT"
+val gerritApiVersion = "2.16-rc0"
 val pluginName = "analytics-wizard"
 
 git.useGitDescribe := true