ota updater revise

opencv-motion-detect/updater.py

@@ -297,6 +297,7 @@ class OTAClient:
         # remove extract path
         os.system('rm -fr '.format(EXTRACT_PATH))
         self.reply(batchId, ver, 'complete', "OK")
+        time.sleep(5)
 
 if __name__ == "__main__":
     # avoid multiple instance