Handle when apt-get upgrade takes a long time (#147)
Handle when apt-get upgrade takes a long time (#147)

On the Ubuntu builders, bb-dependencies can fail if an
apt-get upgrade runs too long. Introduce a busy loop
in bb-dependencies to prevent it from failing.

Signed-off-by: Giuseppe Di Natale <8f90fd86203578c7bda52281540dd9a2276d6d80@llnl.gov>
zfsonlinux/zfs-buildbot,zfsonlinux/zfs-buildbot