Add URL to DEB/RPM repositories about documentation

[joschi]

From IRC:

[09:06:04] <nils_> I'm looking into installing graylog collector, why is there a package for the repository instead of just using an URL?
[09:07:09] <nils_> this seems unnecessaryily complicated
[09:10:18] <kees_> it is, i had to install the repo in a testvm to get the url etc
[09:23:32] <nils_> kees_, I just extracted the deb
[09:23:44] <nils_> probably worth a bug report?
[09:27:26] <joschi> nils_: you can fetch the graylog collector DEB from https://packages.graylog2.org/ if you really want to. I'd still recommend using the repository to get automatic updates.
[09:28:23] <nils_> joschi, I want to use the repository, however I don't want to install a package to get the repository URL since that makes automating the task a headache
[09:28:55] <joschi> nils_: I see, valid point.
[09:29:13] <nils_> joschi, you should probably publish the key and url in addition to the package
[09:30:56] <kees_> a lot easier in puppet to just add an url and key than to download and install a package

[jalogisch]

Is this issue out of date? We have in http://docs.graylog.org/en/2.0/pages/installation/operating_system_packages.html the link to https://packages.graylog2.org/ and i did not see a reason to have more complex information in the documentation when you are able to get from a already linked location.

[joschi]

@jalogisch The issue is still open. It's basically about being able to use something like the Puppet apt::source type to define a repository. Right now, this information is only available inside our "repository" packages.

[jalogisch]

got the point but if someone build own Puppet Modules, my assumption is that he would sneak in our module for this information.