def load_installed_version(self):
        installed_packages = get_installed_pypackages()
        if self.package in installed_packages:
            self.version = "=={}".format(
                installed_packages[self.package].version)
def __init__(self, auth_provider):
        super(SnapshotsClientJSON, self).__init__(auth_provider)

        self.service = CONF.volume.catalog_type
        self.build_interval = CONF.volume.build_interval
        self.build_timeout = CONF.volume.build_timeout