Updated openstack/openstack
Project: openstack/oslo.vmware  4974825747a1cbff8fb6f8d13459185dd14b4599

Enable the PBM WSDL to be updated

Enables the PBM WSDL to be updated after a session is created.

An update of the WSDL will set the pbm value to None. This is lazy loaded
so the next access to it will result in the correct session being created.

Change-Id: Id70a7928ca84846018ee0a62ac020ecbeac1f5d6