Updated openstack/openstack
Project: openstack/python-cinderclient  c9e7818f3f90ce761ad8ccd09181c705880a4266

Change "Connection refused" to "Connection error"

The python-requests documentation indicates that the
ConnectionError exception can be raised for reasons other than
"connection refused".  Let's just say "error" rather than
implying the wrong type of failure.

Change-Id: I2205e27c7c68164db430cdfdc71b57b3002b24be