Bugfix: Dovetail failed to upload results to artifacts

Bugfix: Dovetail failed to upload results to artifacts

That's mainly because of that
1. The owner of all results files are root:root
2. Sometimes there are some files that can only be read by root
3. User jenkins failed to upload these files

Solutions:
1. Change the owner to be jenkins:jenkins
2. Remove these files which are useless for users

Change-Id: I0b5e72e8d5045c7e0d64e32a13ba559612460a84
Signed-off-by: xudan <xudan16@huawei.com>