Fix package_version_for_hash() call

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Remove most ceph-specific tasks. They are in ceph-qa-suite now.

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Correctly find both internal and external tasks

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>