Internal HAProxy: unnecessary quotation marks around port

If deploying with dedicated praefect nodes the HAProxy configuration is updated to allow this.

The resulting /opt/haproxy/haproxy.cfg looks like this:

frontend internal-praefect-tcp-in
    bind *:"2305"
    ...

Other ports in the same config are defined without quotation marks. While (appearantly) it is not impeding functionality I think having a consistent format for the config would be preferable.

I have a change prepared to adjust this and can open a MR for this.