tast-on-debian: Create a new test method for Tast on Debian fs

Add support for `Tast` tests on Debian. Specifically:

- Create a template `tast-debian.jinja2` based on `tast.jinja2`
to execute Tast against DUT running Debian root filesystem.
- Add the option `-checktestdeps=false` for `tast_parser.py`
to allow the execution on non-chromeos DUTs.
- Hack: Create a shell script utility named `fake_initctl.sh`
to simulate the required `initctl` command from ChromeOs on
Debian.
- Hack: Create a shell script utility named `fake_crossystem.sh`
to simulate the required `crossystem` command from ChromeOs on
Debian.

Signed-off-by: Denis Yuji Shimizu <[email protected]>

config/docker/data/tast_parser.py

@@ -1,3 +1,5 @@
+# Description: This script is used to run Tast tests on a DUT and report the
+# results to LAVA.
 #!/usr/bin/env python3
 #
 # Copyright (C) 2022 Collabora Limited