[feat] Add support for combining system:partition and features/extras in valid_systems#3613

casparvl wants to merge 2 commits intoreframe-hpc:developreframe-hpc/reframe:developfrom

casparvl:support_combining_syspart_features_valid_systemscasparvl/reframe:support_combining_syspart_features_valid_systemsCopy head branch name to clipboard