Add data api

[landryb]

For "parity" with georchestra/docker#288

[pmauduit]

Preliminary work on this one would be to create a job on buildbot, and publish the resulting jar onto artifactory, do we also want a debian package out of it, for the sake of coherence with the other modules ?

[landryb]

well yes that's preferred, so that we have versioned things .. iirc it has no config files from the datadir for now, only some args passed on the commandline via the systemd unit ?

[pmauduit]

it has no config files from the datadir for now, only some args passed on the commandline via the systemd unit ?

as classic spring boot apps, an application.yaml is provided in the classpath, but if it does not fit, one can still -Dspring.config.location=... or so to override it and to point onto a totally rewritten configuration file. @jeanmi151 was working on the ability to define a dataapi.configdir. I am not totally sure of the conventions yet (if one need to strictly follow the geOrchestra conventions, or if it is okay to have a dataapi.configdir) to be honest.

I wanted to go forward on this issue so that we could have a better idea of what is desirable / expected and at least so that it could document a bit how to set it up.