core: added default sorting of the audit log events
core: added default sorting of the audit log events

If the user wanted to query the events using api using the "Filter: true", the
results returned were not sorted making the ";max=N" param useless.

This patch simply makes them sorted by log time returning the newer events
first.

Change-Id: I3d768a23c758f4d52f9f563a2e339873f451c9e4
Bug-Url: https://bugzilla.redhat.com/1180199
Signed-off-by: Tomas Jelinek <1e630b38b16bed221fb0bc361448a3f02d51a4de@redhat.com>

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