Factored out required vs. optional used features#1349

Draft

ancorgs wants to merge 4 commits intoyast:SLE-15-SP4from ancorgs:alt-to-huha-pkg-sp4

+128-19

Commits on Jul 7, 2023

Factored out required vs. optional used features

shundhammer
authored and
ancorgs
committed
Factored out storage pkg proposal handling to PackageHandler

shundhammer
authored and
ancorgs
committed
Extended unit test for fringe cases

shundhammer
authored and
ancorgs
committed
Added unit test for new PackageHandler.set_proposal_packages_for method

shundhammer
authored and
ancorgs
committed