make them (almost) all RC

Author: ElectricMaxxx

composer.json

@@ -48,14 +48,13 @@
         "sonata-project/cache-bundle": "2.x-dev",
         "sonata-project/doctrine-phpcr-admin-bundle": "dev-allow_Symfony_4 as 2.1",
         "symfony-cmf/resource": "^1.1",
-        "symfony-cmf/resource-bundle": "^1.1",
         "symfony-cmf/resource-rest-bundle": "^1.1",
         "symfony-cmf/routing": "^2.1",
         "symfony-cmf/routing-auto": "^2.1",
         "symfony-cmf/routing-auto-bundle": "^2.1",
         "symfony-cmf/seo-bundle": "^2.1",
         "symfony-cmf/sonata-phpcr-admin-integration-bundle": "^1.1",
-        "symfony-cmf/symfony-cmf": "^2.1",
+        "symfony-cmf/symfony-cmf": "2.1.0-RC1 as 2.1",
         "symfony-cmf/tree-browser-bundle": "^2.1",
         "symfony/console": "^4.0",
         "symfony/debug-pack": "^1.0",