Change VM Size

Changes flavor to a sanity constant so we can tailor it without
needing further code changes.

Change-Id: Ife5d2e84dce09d126e7f16c660c47b629833094c
Signed-off-by: beierlm <mark.beierl@canonical.com>
(cherry picked from commit a070ce73ab96b90d630f8451a2912f8eaf71a8b0)
1 file changed