Add systemd timer and service for updates

See: https://progress.opensuse.org/issues/166433

Author: kalikiana

systemd/openqa-trigger-from-obs-update.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=Update openqa-trigger-from-obs git repository
+After=network-online.target
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/git -C /opt/openqa-trigger-from-obs pull --quiet --rebase origin master
+User=geekotest
+
+[Install]
+WantedBy=default.target

systemd/openqa-trigger-from-obs-update.timer

@@ -0,0 +1,9 @@
+[Unit]
+Description=Update git repository of openqa-trigger-from-obs
+
+[Timer]
+OnCalendar=*:0/3
+Unit=openqa-trigger-from-obs-update.service
+
+[Install]
+WantedBy=default.target