Fix package name for gnocchi and oswin-tempest-plugin
Fix package name for gnocchi and oswin-tempest-plugin

Gnocchi changed its name in the service and spec files from
"openstack-gnocchi" to "gnocchi" in [1]. We need to adjust this in
rdoinfo, so we can be sure we are using the right name.

Also, the name for oswin-tempest-plugin was incorrect. The package
name is "python-oswin-tests-tempest".

Those issues make the initial bootstrap fail.

[1] - https://review.rdoproject.org/r/11110

Change-Id: I794ccbecd5c5f91a468ddef40c6dea2485cf3f65

javierpena/rdoinfo,redhat-openstack/rdoinfo