PAVI startup optimization (open-mmlab#1679)

Author: EvelynWang-0423

configs/_base_/default_runtime.py

@@ -4,6 +4,7 @@
     hooks=[
         dict(type='TextLoggerHook', by_epoch=False),
         # dict(type='TensorboardLoggerHook')
+        # dict(type='PaviLoggerHook') # for internal services
     ])
 # yapf:enable
 dist_params = dict(backend='nccl')