Response for
ListInstances.
.. attribute:: instances
A list of Redis instances in the project in the specified
location, or across all locations. If the location_id in
the parent field of the request is "-", all regions available
to the project are queried, and the results aggregated. If in
such an aggregated query a location is unavailable, a dummy
Redis entry is included in the response with the name
field set to a value of the form
projects/{project_id}/locations/{location_id}/instances/-
and the status field set to ERROR and status_message
field set to "location not available for ListInstances".
