404s when using nginx ingress

[retpolanne]

This change caused a side effect on clusters using Nginx Ingress.

Apparently, the path /* translates to a location that is invalid for Nginx (that doesn't support wildcards), but valid for GLBC (that supports wildcards).

This can be worked around by adding the annotation nginx.ingress.kubernetes.io/rewrite-target: / (refer to kubernetes/ingress-nginx#1120 (comment))