Bump to Gerrit 2.12.8

Change-Id: I756bd921c0f27fd3738e702f920d26e2e0aa7f88
diff --git a/docker/centos7/Makefile b/docker/centos7/Makefile
index 1377b57..c4cc0db 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=2.12.8
 RELEASE=1
 REPO_VERSION=1
 REPO_RELEASE=2
diff --git a/docker/ubuntu15.04/Makefile b/docker/ubuntu15.04/Makefile
index 6719849..3b5b939 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=2.12.8
 RELEASE=1
 VENDOR=GerritForge
 VENDOR_LC=$(shell echo $(VENDOR) | tr A-Z a-z)
diff --git a/fpm/Makefile b/fpm/Makefile
index 0a660d4..3a49dd1 100644
--- a/fpm/Makefile
+++ b/fpm/Makefile
@@ -1,4 +1,4 @@
-VERSION=2.12.4
+VERSION=2.12.8
 URL=http://gerrit-releases.storage.googleapis.com/gerrit-$(VERSION).war
 RELEASE=1