'Makes REST API call to list volumes under a project.
:param project: name of project
:returns: List of volumes uuids in JSON response payload'

def list_volumes(self, project):

    volume_uris = self.search_volumes(project)
    volumes = []
    for uri in volume_uris:
        volume = self.show_by_uri(uri)
        if volume:
            volumes.append(volume)
    return volumes
