mgr/cephadm: only check haproxy frontend_port conflicts on VIP

mgr/cephadm: only check haproxy frontend_port conflicts on VIP

If we know what IP the frontend_port will be binding
to, we can pass that down through the port_ips mapping
so cephadm will only check if that port on that specific
VIP if in use. This allows multiple haproxy daemons
to be bound to the same port on different VIPs on the
same host.

Note that you still must use a different monitor port
for the two different ingress services as that port
is bound to on the actual IP of the host. Only the
frontend port can be the same for haproxies on the
same host as long as the VIP is different.

Fixes: https://tracker.ceph.com/issues/57614
Signed-off-by: Adam King <adking@redhat.com>