If controller-gen is already installed, but with a different version
than the one specified, this will update it to the correct version.
This avoids extraneous diffs in patchsets that we have seen, such as
the controller-gen version number that gets inserted into manifests.
Signed-off-by: Sean Eagan <seaneagan1@gmail.com>
Change-Id: I82f44c2efb75556d9f1ecbe78018b8bd65b34f9f
3d33c4e4f8