Chore: Update packer and Ubuntu nodes

Update to the latest packer version to fetch a
newer base image version for Ubuntu1804
Update Ubuntu Docker nodes.

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I6ed0b08f302b42918a19400d822eae2dda872670
diff --git a/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-8c-16g.cfg b/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-8c-16g.cfg
index adc76ac..772004b 100644
--- a/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-8c-16g.cfg
+++ b/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-8c-16g.cfg
@@ -1,4 +1,4 @@
-IMAGE_NAME=ZZCI - Ubuntu 18.04 - docker - x86_64 - 20210317-220033.605
+IMAGE_NAME=ZZCI - Ubuntu 18.04 - docker - x86_64 - 20211012-214802.084
 LABELS=ubuntu1804-docker-8c-16g
 HARDWARE_ID=v3-standard-16
 VOLUME_SIZE=40