volume datasource: snapshot_policy and export_policy are not returned correctly

[okrause]

When querying a volume cia the volume datasource, the snapshot_policy is returned wrong (all fields filled with default 0) and the export_policy is not returned at all.

After doing some investigation, I found out that the data source code is using getVolumeByNameOrCreationToken, which in turn uses a "Describe all volumes" (/v2/projects/{projectNumber}/locations/{locationId}/Volumes) call, which doesn't return all fields.

To get all fields, an individual volume needs to be queried with a "Describe a volume" REST call (/v2/projects/{projectNumber}/locations/{locationId}/Volumes/{volumeId}).

After describing all the volumes and find the relevant ones, we likely have to query each of the volumes in our result set again individually to get all the details.

[okrause]

Fixed in 848d687

Closing