Update Ubuntu 16.04 ami
Update Ubuntu 16.04 ami

Signed-off-by: Giuseppe Di Natale <8f90fd86203578c7bda52281540dd9a2276d6d80@llnl.gov>

gmelikov/zfs-buildbot,gmelikov/zfs-buildbot,zfsonlinux/zfs-buildbot,zfsonlinux/zfs-buildbot