Update packer builds

- Memcached does not need centos nodes anymore
  Switch to Ubuntu18.04
- Helm switch to Ubuntu18.04

Change-Id: I87a8b17832757433643de217aad5d32e30ecc24e
Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jenkins-config/clouds/openstack/cattle/centos7-memcached-4c-4g.cfg b/jenkins-config/clouds/openstack/cattle/centos7-memcached-4c-4g.cfg
deleted file mode 100644
index d757901..0000000
--- a/jenkins-config/clouds/openstack/cattle/centos7-memcached-4c-4g.cfg
+++ /dev/null
@@ -1,3 +0,0 @@
-IMAGE_NAME=CentOS 7 - memcached -  - 260980909-9003
-LABELS=centos7-memcached-4c-4g
-HARDWARE_ID=v2-highcpu-4
diff --git a/jjb/ci-management/ci-management-packer-jobs.yaml b/jjb/ci-management/ci-management-packer-jobs.yaml
index 2a8436f..6f40292 100644
--- a/jjb/ci-management/ci-management-packer-jobs.yaml
+++ b/jjb/ci-management/ci-management-packer-jobs.yaml
@@ -52,8 +52,7 @@
     build-timeout: 90
 
     platforms:
-      - centos-7
-      - ubuntu-16.04
+      - ubuntu-18.04
     templates: memcached
 
 - project:
@@ -85,6 +84,5 @@
     build-node: centos7-builder-2c-1g
 
     platforms:
-      - ubuntu-16.04
       - ubuntu-18.04
     templates: helm