Updated openstack/openstack
Project: openstack/nova  29ef173f220bae02b2636ee7a4add248ee0a3c01

Correct exception handling when create aggregate

when create an aggregate, InvalidAggregateAction might be raised,
this patch translates the InvalidAggregateAction to HTTPBadRequest.
Also, 2 unnecessary logs was removed becuase log is not output in
most BadRequest.

Change-Id: I3dac808d8edab6118e347eb5d78b96f96b9d40ca