Fix plonesocial.suite robot tests

Author: Alessandro Pisa

plonesocial/network/browser/author.py

@@ -168,7 +168,7 @@ def stream_provider(self):
             # plonesocial.activitystream integration is optional
             provider = getMultiAdapter(
                 (self.context, self.request, self),
-                name='plonesocial.activitystream.stream_provider')
+                name='plonesocial.core.stream_provider')
             provider.users = self.userid
             return provider()
         except ComponentLookupError: