[Gluster-infra] Upload / Sign RPMs to download.gluster.org

[Jose Rivera]

Hello!

Not sure who's all on this list, but my name's Jose and I used to be
nominally responsible for uploading upstream versions of the RHS
builds of Samba to download.gluster.org. I lapsed in this for a while.
I was about to upload the latest batch today, but was unable to login
to d.g.o. Username is/was jarrpa.

If there's a newer and shinier workflow in place, I'd be happy to go
along with it, too. :)

Cheers!
--Jose