'Evacuate an instance from failed host to specified host.
:param host: Name of the target host
:param on_shared_storage: Specifies whether instance files located
on shared storage.
:param password: string to set as admin password on the evacuated
server.
:returns: An instance of novaclient.base.TupleWithMeta'

@api_versions.wraps('2.0', '2.13')
def evacuate(self, host=None, on_shared_storage=True, password=None):

    return self.manager.evacuate(self, host, on_shared_storage, password)
