Specify a different xcontent mongo db for the acceptance tests

cms/envs/acceptance.py

@@ -40,6 +40,21 @@ MODULESTORE = {
         'OPTIONS': MODULESTORE_OPTIONS
     }
 }
+
+CONTENTSTORE = {
+    'ENGINE': 'xmodule.contentstore.mongo.MongoContentStore',
+    'OPTIONS': {
+        'host': 'localhost',
+        'db': 'acceptance_xcontent',
+    },
+    # allow for additional options that can be keyed on a name, e.g. 'trashcan'
+    'ADDITIONAL_OPTIONS': {
+        'trashcan': {
+            'bucket': 'trash_fs'
+        }
+    }
+}
+
 # Set this up so that rake lms[acceptance] and running the
 # harvest command both use the same (test) database
 # which they can flush without messing up your dev db