Possible to Load balance UDP services?

**Is it possible to load balance UDP services with the pre-packaged HAproxy load balancer?**

**Description**:
Hi,

I'm trying to load balance a UDP services in my kubernetes cluster. I get the following error message when I try to publish my service:

`LoadBalancer 10.109.167.183 9001:30180/UDP 18h`

` Warning SyncLoadBalancerFailed 77s (x8 over 11m) service-controller Error syncing load balancer: failed to ensure load balancer: rpc error: code = Unknown desc = UDP not supported yet: Not Supported`

I use the pre-packaged HAproxy and also tried to use the NGINX ingress controller [NGINX ingress controller](https://kubernetes.github.io/ingress-nginx/user-guide/exposing-tcp-udp-services/)

I also tried to setup the metalLB from the microsoft official documentation but without success, see issue #199

**Questions**
- is it possible to load balance UDP services with the pre-packaged HAproxy load balancer?
- Is it possible to load balance UDP services with metalLB?

**Bugs**
- Take a look at issue #199 and update the microsoft documenatation so metalLB. I believe the documentation is not working and needs an update.