This PR removes LXC templates that are no longer used in any context.
The templates were holdovers from when the upstream Ubuntu template
did not support additional packages in containers by default. The
issues within the default template have been removed and we should
change to using the default Ubuntu template immediately.
This template change should be backported to all applicable branches.
which would include both Icehouse and Juno.
Closes-Bug: #1437063
Change-Id: I4cece0fcfc1c3badb246726b7187452cb9d2ad83
5cc205ccfc