[Controller] Support NGINX Ingress Controller v1.0.4

Summary

In gitlab-org/charts/gitlab!2267 (merged), NGINX was upgraded from 0.41.2 to 1.0.4.

This upgrade came with many changes. The Operator will need to be updated to reflect these changes.

Acceptance criteria

• Operator deploys NGINX 1.0.4 from the GitLab Helm Charts
• NGINX works as expected