Fix tmp dirs removal

Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>

run-aa-test

@@ -71,6 +71,7 @@ fi
 
 # Create a temporary directory for files
 TMP_DIR=$(mktemp -d)
+trap "rm -rf $TMP_DIR; exit" EXIT
 
 # Log start time
 START_TIME=$(date +"%F %T")

run-test-in-systemd

@@ -300,7 +300,7 @@ ${systemctl} stop ${service} || :
 
 debug "waiting for end-of-file on command output..."
 wait "$cat_fifo_pid" || result=fail
-rm -fr "${user_log_dir}" || result=fail
+${as_target_user} rm -fr "${user_log_dir}" || result=fail
 
 if [ -n "${lava_runes}" ]; then
     "lava-test-case" "${name}" --result "${result}"