Update Ubuntu 18.04 Docker template

Updating the Ubuntu 18.04 Docker template to use the new image that
installs package_cloud.

Signed-off-by: Vanessa Rene Valderrama <vvalderrama@linuxfoundation.org>
Change-Id: Ibe858291453b9573cc2d4a9debadf9acfd61a1bd
diff --git a/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-4c-4g.cfg b/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-4c-4g.cfg
index 9eec453..d8dd497 100644
--- a/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-4c-4g.cfg
+++ b/jenkins-config/clouds/openstack/cattle/ubuntu1804-docker-4c-4g.cfg
@@ -1,4 +1,4 @@
-IMAGE_NAME=ZZCI - Ubuntu 18.04 - docker - x86_64 - 20190419-225102.176
+IMAGE_NAME=ZZCI - Ubuntu 18.04 - docker - x86_64 - 20190823-170649.787
 LABELS=ubuntu1804-docker-4c-4g
 HARDWARE_ID=v2-highcpu-4
-VOLUME_SIZE=10
\ No newline at end of file
+VOLUME_SIZE=10