schema: read_cfg_paths call init.fetch to lookup /v/l/c/instance

Fix cloud-init schema --system being unable to find merged
userdata stored at /var/lib/cloud/instance/cloud_config.txt.

Init.paths.get_ipath only has visibility to merged cloud config in
/var/lib/cloud/<instance_id>/cloud-config.txt after fetching the
existing cached datasource which provides instance-id from metadata
in order to determine the unique instance-id which represents the
path to the cloud-config.txt.

To support reuse of read_cfg_paths helper function, add an optional
parameter fetch_existing_datasource which indicates whether reading
the existing datasource is necessary for this helper function.

cloud-init schema --system calls read_cfg_paths providing
fetch_existing_datasource="trust" prior to calls to
paths.get_ipath().

0 files changed, 0 insertions, 0 deletions