OpenShift Container Platform 4 router fails with a route referencing a service with duplicate targetPort values

Issue

• When creating a service that has two frontend listeners pointing to the same backend targetPort, ingress router HAProxy ends up with Fatal errors found in configuration and can't reload new configuration. In the HAProxy logs the following error is reported:

  E0325 11:37:02.047414       1 limiter.go:165] error reloading router: exit status 1
  [ALERT] 083/113702 (3500) : parsing [/var/lib/haproxy/conf/haproxy.config:641] : backend 'be_edge_http:foo:bar', another server named 'pod:bar-12345678-12345:bar-service:10.1.1.1:9091' was already defined at line 640, please use distinct names.
  [ALERT] 083/113702 (3500) : parsing [/var/lib/haproxy/conf/haproxy.config:660] : backend 'be_edge_http:foo:bar-log', another server named 'pod:bar-12345678-12345:bar-service:10.1.1.1:9091' was already defined at line 659, please use distinct names.