Ran a `go get -u` and bumped K8s deps to 1.15.0. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
We already have it vendored for a Kube package we import, but we want a more recent version with additional bugfixes over the 1.0 release we originally had. Signed-off-by: Matthew Heon <matthew.heon@pm.me>