Once the full testsuite has been run for the particular MySQL release; execute just the "main" suite on subsequent runs for that release.
The implementation default to running of the whole testsuite, as until now, if the maintainer won't set the flag that running of the minimal testsuite is enough for this release.
This feature aims to help with faster and more stable package builds when adding small fixes on top of already tested release;
and to ease the life of Fedora Linux Release Engineers during (mass) rebuilds.
Related: #1969430
It will help the maintainers when trying to keep SPECs for different versions or product with minimal amount of differences
Disable "--mem" option, because the s390x builders ran out of resources
Related: #1969430
