Dont set the github token during stage
Dont set the github token during stage

Since all git operations in kubernetes/kubernetes during stage only
involve the local clone of the repository, we do not set the authenticated
git remote to avoid the risk of the token ending in the stage bucket.

Signed-off-by: Adolfo García Veytia (Puerco) <9de42c8261a7cacaae239656a4dd6991d9b9250f@uservers.net>

kubernetes/release,kubernetes/release