Set Gerrit to 2.16-rc2

Change-Id: Ia45fe0b95abe10ab6e40f1610f7cd922ddfa92ab
diff --git a/centos/7/Dockerfile b/centos/7/Dockerfile
index 6dd9187..599cf0b 100644
--- a/centos/7/Dockerfile
+++ b/centos/7/Dockerfile
@@ -9,7 +9,7 @@
 # Install OpenJDK and Gerrit in two subsequent transactions
 # (pre-trans Gerrit script needs to have access to the Java command)
 RUN yum -y install java-1.8.0-openjdk
-RUN yum -y install gerrit-2.16.rc1-1  && rm -f /var/gerrit/logs/*
+RUN yum -y install gerrit-2.16.rc2-1  && rm -f /var/gerrit/logs/*
 
 USER gerrit
 RUN java -jar /var/gerrit/bin/gerrit.war init --batch --install-all-plugins -d /var/gerrit
diff --git a/ubuntu/16/Dockerfile b/ubuntu/16/Dockerfile
index d1f88c1..95c37c9 100644
--- a/ubuntu/16/Dockerfile
+++ b/ubuntu/16/Dockerfile
@@ -12,7 +12,7 @@
 # Install OpenJDK and Gerrit in two subsequent transactions
 # (pre-trans Gerrit script needs to have access to the Java command)
 RUN apt-get -y install openjdk-8-jdk
-RUN apt-get -y install gerrit=2.16.rc1-1 && rm -f /var/gerrit/logs/*
+RUN apt-get -y install gerrit=2.16.rc2-1 && rm -f /var/gerrit/logs/*
 
 USER gerrit
 RUN java -jar /var/gerrit/bin/gerrit.war init --batch --install-all-plugins -d /var/gerrit