Proposed a security.yaml file for the "test" environment (#131)

symfony/security-bundle/3.3/config/packages/security.yaml

@@ -6,6 +6,7 @@ security:
         dev:
             pattern: ^/(_(profiler|wdt)|css|images|js)/
             security: false
+        # if you change the name of the firewall, update it in the packages/test/security.yaml file too
         main:
             anonymous: ~
 

symfony/security-bundle/3.3/config/packages/test/security.yaml

@@ -0,0 +1,7 @@
+# This configuration simplifies testing URLs protected by the security mechanism
+# See https://symfony.com/doc/current/cookbook/testing/http_authentication.html
+security:
+    firewalls:
+        # replace 'main' by the name of your own firewall
+        main:
+            http_basic: ~