CI

This is odd. Another job passed:
http://pulpito.ceph.com/zack-2016-10-27_14:59:23-upgrade:jewel-x-master-distro-basic-smithi/498280/

It asked for and got this file:
https://1.chacra.ceph.com/r/ceph/jewel/3c9fe545dccf13413bb491098c089d3e4a76bcd2/centos/7/flavors/default//noarch/ceph-release-1-0.el7.noarch.rpm

This is a difference between the build scripts for upstream releases and testing repos.

That first link is from chacra.ceph.com, which is a repo made for our upstream releases, the other from 1.chacra.ceph.com would have been created for testing specifically.

I'm starting to wonder if we should not use chacra.ceph.com at all, we seem to keep stumbling across these little gotchas.

Upstream releases use a 1-1 that got bumped from 1-0 in 2015.

For upstream, we cannot keep the same version for ever, it would prevent us from invalidating older/invalid RPMs. An example
of this is the centos-release rpms: https://rpmfind.net/linux/rpm2html/search.php?query=centos-release

To summarize:

- yes, it changed names in 2015.
- We should not provide the same file with the same version for ever.
- clients should accommodate for a newer version

The version change is one problem, but the other is that repos created or imported into chacra.ceph.com will contain a ceph-release file that generates a ceph.repo that points to download.ceph.com, which is correct for our upstream builds but doesn't work for testing. Also, the ceph-release file from repos already living at gitbuilder.ceph.com will point back to gitbuilder.ceph.com so that file can't be imported into chacra.ceph.com for testing either.

After some discussion we think the best path forward is to have teuthology change the way it consumes repos from chacra nodes. I've added a feature to the /repos/ endpoint in chacra that will print out either a rpm repo file or deb source list. Teuthology and other clients can use this endpoint to consume chacra repos. This feature was introduced with: https://github.com/ceph/chacra/pull/212

To use, get a full API url to a chacra repo from shaman output (as ``chacra_url``) or otherwise and add '/repo/' to the end.

For example, this is the output from the repo used in the summary:

$ curl https://chacra.ceph.com/repos/ceph/jewel/3a9fba20ec743699b69bd0181dd6c54dc01c64b9/centos/7/flavors/default/repo/
[ceph]
name=ceph packages for \$basearch
baseurl=https://chacra.ceph.com/r/ceph/jewel/3a9fba20ec743699b69bd0181dd6c54dc01c64b9/centos/7/flavors/default/\$basearch
enabled=1
gpgcheck=0
type=rpm-md

[ceph-noarch]
name=ceph noarch packages
baseurl=https://chacra.ceph.com/r/ceph/jewel/3a9fba20ec743699b69bd0181dd6c54dc01c64b9/centos/7/flavors/default/noarch
enabled=1
gpgcheck=0
type=rpm-md

[ceph-source]
name=ceph source packages
baseurl=https://chacra.ceph.com/r/ceph/jewel/3a9fba20ec743699b69bd0181dd6c54dc01c64b9/centos/7/flavors/default/SRPMS
enabled=1
gpgcheck=0
type=rpm-md