NGINX Ingress Controller 1.4.4

CHANGES:

• Update NGINX version to 1.15.9.

UPGRADE:

• For NGINX, use the 1.4.4 image from our DockerHub: nginx/nginx-ingress:1.4.4 or nginx/nginx-ingress:1.4.4-alpine
• For NGINX Plus, please build your own image using the 1.4.4 source code.

RESOURCES:

Documentation -- https://github.com/nginxinc/kubernetes-ingress/tree/v1.4.4/docs
Configuration examples -- https://github.com/nginxinc/kubernetes-ingress/tree/v1.4.4/examples