Fix backend ports to be seperated

server webserver 10.0.0.10:8000,10.0.0.20:8001  check

Does not work using haproxy 1.4.24 on centos - it only checks the 8000 port

To fix this i modified the template to write the backend servers like 

server webserver 10.0.0.10:8000  check
server webserver 10.0.0.20:8001  check

This is a simpler method which allows both ports to be checked

Cheers