[sle15sp3][desktop] Implement test cases for gnome-software/gnome-package-kit/packagekit.
We have been lack of checking the packagekit mechanism in early development phase, and experienced some tough time to do a thorough check in the past.
Automating such a scenario on one hand will make sure the toolset is tested in early development, on the other hand, it will remind us update-test-*
should be ready in early development phase.
Notice the update-test-* packages will be intended to remove in GMC. So the case is supposed to be failed (or softfailed) in GMC build.
This ticket was set to "High" priority but was not updated within the SLO period for "High" tickets (30 days) as described on https://progress.opensuse.org/projects/openqatests/wiki/Wiki#SLOs-service-level-objectives . Please consider picking up this ticket within the next 30 days or just set the ticket to the next lower priority of "Normal" (SLO: updated within 365 days). This update was done as agreed within the SUSE QE Sync call 2021-09-01