Bump to Gerrit 2.13

Change-Id: I6eee7f4e5e9cf2a8c7769ec004887de7cbf0e862
diff --git a/docker/centos7/Makefile b/docker/centos7/Makefile
index 1377b57..c1ac58f 100644
--- a/docker/centos7/Makefile
+++ b/docker/centos7/Makefile
@@ -1,7 +1,7 @@
 # Customise the following variable as Make parameters
 # to produce a yum.repo for a VENDOR distribution
 # Default values are pointing to GerritForge (www.gerritforge.com)
-VERSION=2.12.4
+VERSION=2.13
 RELEASE=1
 REPO_VERSION=1
 REPO_RELEASE=2
diff --git a/docker/ubuntu15.04/Makefile b/docker/ubuntu15.04/Makefile
index 6719849..49a0dff 100644
--- a/docker/ubuntu15.04/Makefile
+++ b/docker/ubuntu15.04/Makefile
@@ -1,7 +1,7 @@
 # Customise the following variable as Make parameters
 # to produce a yum.repo for a VENDOR distribution
 # Default values are pointing to GerritForge (www.gerritforge.com)
-VERSION=2.12.4
+VERSION=2.13
 RELEASE=1
 VENDOR=GerritForge
 VENDOR_LC=$(shell echo $(VENDOR) | tr A-Z a-z)
diff --git a/fpm/Makefile b/fpm/Makefile
index 0a660d4..31a51c2 100644
--- a/fpm/Makefile
+++ b/fpm/Makefile
@@ -1,4 +1,4 @@
-VERSION=2.12.4
+VERSION=2.13
 URL=http://gerrit-releases.storage.googleapis.com/gerrit-$(VERSION).war
 RELEASE=1