Remove semVer from NGINX chart
The semverCompare in the controller image breaks our deploy to GKE Marketplace.
Upstream for nginx-controller is using image 0.20.0 and there is no longer a need to compare against 0.16.0.
Upstream does have comparisons against 0.9.0-beta that we already removed, so there is already precedence for us to remove a semverCompare.
We need to remove semverCompare from charts/gitlab/charts/nginx
.