Moved and renamed functional tests. Simplified ConfigurationTest

Tests/Functional/Resources/config/config.yml

@@ -0,0 +1,11 @@
+knp_gaufrette:
+    adapters:
+        foo:
+            local:
+                directory:  %kernel.root_dir%
+                create:     true
+
+    filesystems:
+        foo:
+            adapter:        foo
+            alias:          foo_filesystem

Tests/Functional/Resources/config/config_dev.yml

@@ -0,0 +1,2 @@
+imports:
+    - { resource: config.yml }

Tests/Functional/Resources/config/config_test.yml

@@ -0,0 +1,7 @@
+imports:
+    - { resource: config.yml }
+
+knp_gaufrette:
+    adapters:
+        foo:
+            in_memory:  ~