- Adjusting how $PREEXISTING_COMMANDS is fed into the while loop for
wsl_systemd

- Update to version 20221221
* Improved tests for [boot] section when 'command=.*$' is present so
as to not clobber existing commands for wsl_base & wsl_gui
* wsl_systemd should clear ping_group_range if present and retain any
existing commands

- Update to version 20221220
* Reworked to avoid build race condition where it seemed like there was
an issue during 50-check-installtest and what happens with
"testing for pre/postinstall scripts that are not idempotent"
* Adding true %post section

- Adding [wsl_base,gui,systemd] tags for echo output
- Changing %post to %pre as there seems to be a problem when
50-check-installtest runs as %post

- Update to version 20221219
* Adjusting wsl_systemd %post to remove ping_group_range from wsl.conf
when systemd is being enabled.

- Update to version 20221216
* Undoing LoadCredential changes since it's NOT what was breaking WSLg
integration
* Adjusing %post code for edits to %{_sysconfdir}/wsl.conf for:
* wsl_base
* wsl_gui
* wsl_systemd