Update memcached/redis packer templates

Update memcached and redis image information to an
available one.

Change-Id: Id8bd716894ea722d65650897b1bec92afade350d
Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/packer/templates/memcached.json b/packer/templates/memcached.json
index dd1227a..5bf1783 100644
--- a/packer/templates/memcached.json
+++ b/packer/templates/memcached.json
@@ -15,7 +15,7 @@
   "builders": [
     {
       "name": "vexxhost",
-      "image_name": "{{user `distro`}} - memcached - {{user `arch`}} - {{isotime \"20060102-150405.000\"}}",
+      "image_name": "{{user `distro`}} - memcached - {{user `arch`}} - {{isotime \"20180101-1003\"}}",
       "source_image_name": "{{user `base_image`}}",
       "type": "openstack",
       "identity_endpoint": "{{user `cloud_auth_url`}}",
diff --git a/packer/templates/redis.json b/packer/templates/redis.json
index 2b3c03f..87caeee 100644
--- a/packer/templates/redis.json
+++ b/packer/templates/redis.json
@@ -15,7 +15,7 @@
   "builders": [
     {
       "name": "vexxhost",
-      "image_name": "{{user `distro`}} - redis - {{user `arch`}} - {{isotime \"20060102-150405.000\"}}",
+      "image_name": "{{user `distro`}} - redis - {{user `arch`}} - {{isotime \"20180101-1003\"}}",
       "source_image_name": "{{user `base_image`}}",
       "type": "openstack",
       "identity_endpoint": "{{user `cloud_auth_url`}}",