TESTS: replace old test suite with the new one

get rid of Bats definitively

test/test_multiple-hosts.py

@@ -0,0 +1,16 @@
+import pytest
+
+
+def test_unknown_virtual_host_is_503(docker_compose, nginxproxy):
+    r = nginxproxy.get("http://unknown.nginx-proxy.tld/port")
+    assert r.status_code == 503
+
+def test_webA_is_forwarded(docker_compose, nginxproxy):
+    r = nginxproxy.get("http://webA.nginx-proxy.tld/port")
+    assert r.status_code == 200
+    assert r.text == "answer from port 81\n"
+
+def test_webB_is_forwarded(docker_compose, nginxproxy):
+    r = nginxproxy.get("http://webB.nginx-proxy.tld/port")
+    assert r.status_code == 200
+    assert r.text == "answer from port 81\n"