ingress-nginx-app release v1.10.0

Upgrade ingress-nginx-controller from v0.35.0 to v0.40.2. Important upstream changes to pay special attention to:
- App/chart requires Kubernetes 1.16+ based platform release
  - It is recommended to change API group of Ingress resources from extensions/v1beta1 to networking.k8s.io/v1beta1 (available since Kubernetes 1.14)
- Default configuration changes:
  - gzip-level default changed from 5 to 1
  - ssl-session-tickets default changed from true to false
  - use-gzip default changed from true to false
  - upstream-keepalive-connections changed from 32 to 320
  - upstream-keepalive-requests changed from 100 to 10000
Support and enable by default mimalloc as a drop-in malloc replacement to reduce nginx memory utilization.
Support configuring additional environment variables for NGINX Ingress Controller container, to support configuring additional mimalloc options.
Adjust Helm hook-delete-policy and hook-weight to make admission webhook management more reliable.