Re: [libvirt] [jenkins-ci PATCH] guests: Rename Ubuntu targets

Back when they were introduced, we chose to only include the part of the version number preceding the dot with the rationale that doing so introduced no ambiguity since, while there are two Ubuntu releases per year, we only support LTS releases and those happen once every two years. When introducing openSUSE support, however, we could not adopt the same strategy because openSUSE Leap 15.0 and openSUSe Leap 15.1 are, at least in some regards, just as distinct as Ubuntu 16.04 and Ubuntu 18.04 are, despite sharing the same major version number; we've thus decided to encode the full version number, dropping the dot to avoid issues connected to the fact that we use the target name as host name for guests. Let's retroactively apply this new convention to existing Ubuntu targets in order to maintain consistency. Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt;