Update config to remove need for multiple Ingress objects

[jacekn]

This code removes supercluster deployed Ingress and it modified the code to allow the SimplePayment mission to pass with a catch-all nginx proxy.
Proxy config I used is:

server {
  listen 80 default_server;
  server_name _;
  resolver 10.96.0.10 ipv6=off;
  location ~ ^/(.+)-([0-9]+)/core$ {
    proxy_pass http://$1-$2.$1.stellar-supercluster.svc.cluster.local:11626/;
  }
  location ~ ^/(.+)-([0-9]+)/core/(.*)$ {
    proxy_pass http://$1-$2.$1.stellar-supercluster.svc.cluster.local:11626/$3$is_args$args;
  }

  location ~ ^/(.+)-([0-9]+)/history$ {
    proxy_pass http://$1-$2.$1.stellar-supercluster.svc.cluster.local:80/;
  }
  location ~ ^/(.+)-([0-9]+)/history/(.*)$ {
    proxy_pass http://$1-$2.$1.stellar-supercluster.svc.cluster.local:80/$3;
  }
}

To allow me to target pods directly I had to modify serviceName in the StatefulSet