slap: do not ignore errors in initializeConnection

slapos/slap/slap.py

@@ -848,7 +848,8 @@ class slap:
     if not slapgrid_rest_uri:
       try:
         slapgrid_rest_uri = getHateoasUrl_cache[getHateoasUrl_cache_key] = self._connection_helper.GET('getHateoasUrl')
-      except:
+      except NotFoundError, e:
+        # master does not implement HATEOAS
         pass
     if slapgrid_rest_uri:
       self._hateoas_navigator = SlapHateoasNavigator(