[maintenance]: add back the 5s message-switch test as a stresstest

Signed-off-by: Edwin Török <[email protected]>

ocaml/message-switch/core_test/dune

@@ -57,6 +57,24 @@
   (package message-switch)
 )
 
+(rule
+  (alias stresstest)
+  (deps
+    client_unix_main.exe
+    server_unix_main.exe
+    async/client_async_main.exe
+    async/server_async_main.exe
+    lwt/client_main.exe
+    lwt/server_main.exe
+    lwt/link_test_main.exe
+    ../switch/switch_main.exe
+    ../cli/main.exe
+  )
+  (action (setenv SECS 5 (run ./basic-rpc-test.sh)))
+  (package message-switch)
+)
+
+
 (rule
   (alias runtest)
   (deps