TESTS: replace old test suite with the new one

get rid of Bats definitively

test/requirements/web/entrypoint.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+set -u
+
+trap '[ ${#PIDS[@]} -gt 0 ] && kill -TERM ${PIDS[@]}' TERM
+declare -a PIDS
+
+for port in $WEB_PORTS; do
+	echo starting a web server listening on port $port;
+	/webserver.py $port &
+	PIDS+=($!)
+done
+
+wait ${PIDS[@]}
+trap - TERM
+wait ${PIDS[@]}