Upgrade Ingress application via gitlab managed apps

Why is this still using 0.10.2? This is very out of date. Upstream, gitlab/gitlab

First noticed in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/27582#note_166353581, even though the helm chart is quite recent we seem to have pinned the image to a very old version.

Proposal

Remove the pin to the image.

This upgrades us from 0.10.2 to whatever is latest in https://github.com/kubernetes/ingress-nginx/blob/master/Changelog.md