Ensure domains.list filtered results are correct

Convert enabled=False to enabled=0, such that requests directed to
an older keystone not containing the fix for bug #1267530 will not
return the wrong data.

Closes-Bug: #1281070
Change-Id: I49fd0953fc2323f2034c241c6342ced6f3412125
Merge "Ensure domains.list filtered results are correct"