Updated openstack/openstack
Project: openstack/glance  fcfb5d04cd019aedb0beaa362fb703d543d711c3

Ensures that task.message is of type unicode

It is likely that a task script might store the message in a format
which is not 'Text', like a json message. To ensure that we save the
task message in the appropriate format, we should typecast it.

partially implements bp async-glance-workers

Change-Id: I4eaebb75357d448d4ea458cd7fe5e4ac96b33ace