fixup: wait for routers to exit

tests/system_tests_ssl.py

@@ -711,9 +711,18 @@ def test_invalid_cert_paths(self):
         if not SASL.extended():
             self.skipTest("Cyrus library not available. skipping test")
 
+        self.routers[0].wait_log_message(r"\(critical\) Router start-up failed:")
         self.routers[0].wait_log_message("Failed to configure SSL certFile")
+        self.routers[1].wait_log_message(r"\(critical\) Router start-up failed:")
         self.routers[1].wait_log_message("Failed to configure SSL caCertFile")
 
+        # race fix: on slow CI systems the test will exit before the routers
+        # have cleanly shutdown - this will cause the test to fail. Manually
+        # wait for the router processes to compile (raise Timeout error if they
+        # do not)
+        self.routers[0].wait(TIMEOUT);
+        self.routers[1].wait(TIMEOUT);
+
 
 class RouterTestSslInterRouterWithoutHostnameVerificationAndMismatchedCA(RouterTestSslBase):
     """