ERP5Security: do not hide exceptions in getUserEntry

If exception happens when contacting google server, just propagate it,
PAS will handle it.

product/ERP5Security/ERP5ExternalOauth2ExtractionPlugin.py

@@ -275,8 +275,6 @@ class ERP5GoogleExtractionPlugin(ERP5ExternalOauth2ExtractionPlugin, BasePlugin)
         ).authorize(httplib2.Http())
       service = apiclient.discovery.build("oauth2", "v1", http=http)
       google_entry = service.userinfo().get().execute()
-    except Exception:
-      google_entry = None
     finally:
       socket.setdefaulttimeout(timeout)
     user_entry = {}

[Jérome Perrin]

PAS only catch a few exceptions, not socket.timeout, but anyway catching this exception or not does not make a difference I feel:

• if exception is propagated, user sees "timeout" site error
• if exception is catched, user will not be logged in for this request and surely some error will happen