Merge pull request #29553 from keszybz/analyze-cat-config-tldr

analyze/cat-config: add switch to print only "interesting" parts of conffiles

diff --cc src/binfmt/binfmt.c
Simple merge

diff --cc src/machine/machinectl.c
Simple merge

diff --cc src/sysctl/sysctl.c
Simple merge

diff --cc src/sysusers/sysusers.c
Simple merge

diff --cc src/tmpfiles/tmpfiles.c
Simple merge

diff --cc test/units/testsuite-65.sh
Simple merge