Mariadb cartridge problems

[alejosv]

When I try add cartridge to my app, I use:
rhc cartridge-add --app myapp https://raw.githubusercontent.com/openshift/origin-server/master/cartridges/openshift-origin-cartridge-mariadb/metadata/manifest.yml

But immediately shows me this message in console:

The provided downloadable cartridge 'https://raw.githubusercontent.com/openshift/origin-server/master/cartridges/openshift-origin-cartridge-mariadb/metadata/manifest.yml' cannot
be loaded: Cartridge-Vendor 'redhat' is reserved.

Is this a issues with the manifest file?

[bmacintyre]

Same issue. "cannot be loaded: Cartridge-Vendor 'redhat' is reserved."