The initial implementation only defined Ubuntu Xenial Cloud image
This change adds more official images for future testing.
Change-Id: I6dd8d5cfa9ecc598a52100e2db8e74fdd364a79f
Signed-off-by: Victor Morales <victor.morales@intel.com>
Issue-ID: MULTICLOUD-301
         create: yes
         block: |
           translations:
+            - name: ubuntu/14.04
+              url: https://cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img
             - name: ubuntu/16.04
               url: https://cloud-images.ubuntu.com/xenial/current/xenial-server-cloudimg-amd64-disk1.img
+            - name: ubuntu/18.04
+              url: https://cloud-images.ubuntu.com/bionic/current/bionic-server-cloudimg-amd64.img
             - regexp: 'centos/(\d+)-(\d+)'
               url: 'https://cloud.centos.org/centos/$1/images/CentOS-$1-x86_64-GenericCloud-$2.qcow2'
             - name: fedora