expose apps on multiple domains

[adamtulinius]

It should be possible to

1. specify multiple domains in the marathon label
2. expose everything with and without a FQDN (i.e. bar.foo.example.com as well as bar.foo)

@srhb

[adamtulinius]

Thoughts: (2) Could be implemented by always stripping a suffix from the hostname, or adding a suffix to the hostname when missing.

If always adding a suffix, all domains in labels could be written more succinctly as the short version of the hostname, but this might make users rely on this feature.
On the other hand stripping the postfix might make this more of a "oh, nice it worked despite not typing the FQDN into my browser" sort of thing.

[srhb]

I absolutely agree that (1) would be nice to have; it would remove a lot of my boilerplate. I'm skeptical about (2), however, as I think the "path of least effort" during debugging is to look for exact matches, not label values that might have transformed to include or exclude parts.