[LTP] [PATCH] [RFC] doc: Clarify what should be cleaned up at test end

[Petr Vorel]

Hi Cyril,

> This adds a short paragraph that writes down previously unwritten rule
> for resource cleanup.

> Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
> CC: Jan Stancek <jstancek@redhat.com>
LGTM.

Reviewed-by: Petr Vorel <pvorel@suse.cz>

Kind regards,
Petr