aaa: attach_user_to_role: user id may be unique within provider
aaa: attach_user_to_role: user id may be unique within provider

Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1262604
Change-Id: I2255c53f9947e89a036e5e7875430b9e7367ec35
Signed-off-by: Alon Bar-Lev <2e3ceb4d37adc6ae3ccc00d3646e0e0a036ace03@redhat.com>

zerodengxinchao/ovirt-engine,eayun/ovirt-engine,yingyun001/ovirt-engine,yingyun001/ovirt-engine,zerodengxinchao/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine,zerodengxinchao/ovirt-engine,yapengsong/ovirt-engine,yapengsong/ovirt-engine,walteryang47/ovirt-engine,yapengsong/ovirt-engine,walteryang47/ovirt-engine,zerodengxinchao/ovirt-engine,yingyun001/ovirt-engine,yingyun001/ovirt-engine,yingyun001/ovirt-engine,yapengsong/ovirt-engine,walteryang47/ovirt-engine,eayun/ovirt-engine,walteryang47/ovirt-engine,eayun/ovirt-engine,yapengsong/ovirt-engine,eayun/ovirt-engine,zerodengxinchao/ovirt-engine