Update Centos Redis node

Update image for Centos Redis image to
CentOS 7 - redis - 20180805-2225

Change-Id: I4e4c0d1970cc3d780733e44ffcf03761923aff8c
Issue-ID: CIMAN-177
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jenkins-config/clouds/openstack/cattle/centos7-redis-4c-4g.cfg b/jenkins-config/clouds/openstack/cattle/centos7-redis-4c-4g.cfg
index 4c0766c..975b749 100644
--- a/jenkins-config/clouds/openstack/cattle/centos7-redis-4c-4g.cfg
+++ b/jenkins-config/clouds/openstack/cattle/centos7-redis-4c-4g.cfg
@@ -1,3 +1,3 @@
-IMAGE_NAME=Ubuntu 16.04 - redis - 20180101-1003
+IMAGE_NAME=CentOS 7 - redis - 20180805-2225
 LABELS=centos7-redis-4c-4g
 HARDWARE_ID=v2-highcpu-4