db: support absolute log files
db: support absolute log files

Change-Id: Ife150c0d965fbadd47bd4291d5e9d62eeaa25f63
Signed-off-by: Alon Bar-Lev <2e3ceb4d37adc6ae3ccc00d3646e0e0a036ace03@redhat.com>

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