gsmartcontrol should not save test results as root

[Humphrey van Polanen Petel]

gsmartcontrol requires root access to run, which is okay, but since it is typically run by a user any directory created and any results saved therein after running a test should not be owned by root, but by the user.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gsmartcontrol 0.8.7-1.1ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-101.102~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-101-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
Date: Fri May 29 13:28:50 2020
ExecutablePath: /usr/bin/gsmartcontrol
InstallationDate: Installed on 2018-12-30 (516 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: gsmartcontrol
UpgradeStatus: No upgrade log present (probably fresh install)