This dependency was removed in 2af6db672e, but
was re-introduced in commit 2fab240f21.
Now that golang.org/x/tools also stopped using this dependency, removing
this use will remove the package from our dependency tree.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The TestUpgrade downloads the latest of previous release's binary and
use them to setup pods and then use current release to recover the
existing pods.
Signed-off-by: Wei Fu <fuweid89@gmail.com>
