Fix problem with setting SSL protocol in QPid

looks like we were setting the wrong param

This is patch Id138926f in Grizzly oslo-incubator and it was already
included as part of I9fc826a4 for Havana.

Closes-Bug: 1158807
Change-Id: Ie751e5670f612d52eea11db72bab4620de243e89
Merge "Fix problem with setting SSL protocol in QPid" into stable/grizzly
Merge branch 'stable/grizzly' of https://github.com/openstack/nova into grizzly/stable