schema: allow any object type for job metadata values
Widen the range of allowed types for job metadata values in the original schema to align it with the new schema {str: object}. This change is backwards-compatible and allows objects such as lists or dictionaries to be passed in the job metadata rather than only strings and integers. For example, this is now possible:
metadata:
api_config:
name: staging.kernelci.org
url: https://staging.kernelci.org:9000
version: latest
node_id: 645372a98fec6b4207361e03
Signed-off-by: Guillaume Tucker guillaume.tucker@collabora.com