Add more OS Type

[teoseller]

What version of fleet are you using (fleet version --full)?

[e@x ~]$ fleet version --full fleet - version 2.0.2 branch: master revision: 8ca0358bf28173685815b79d8683a4239d629a14 build date: 2019-01-18T00:39:40Z build user: zwass go version: go1.11.3

What operating system are you using?

Red Hat Enterprise Linux Server release 7.6

What did you do?

What did you expect to see?

I see in the right panel this OS Type macOS Ubuntu Centos MS windows

What did you see instead?

I suggest to add other os type like Debina Red Had Suse Fedore if the list could be to long, you can give the possibility to the admin to choose the os that is show in the right panel.

I know that is possibile to do with LABELS but i prefer if is possible to have this feature builtin :)

Thank you a lot

[nyanshak]

This looks to be a duplicate of #1909 - @zwass maybe we can merge these issues?