How to fix istio-proxy log

Hello!
How can I hide these messages from the istio proxy log?

2018-08-27T12:57:56.018026Z info watchFileEvents: “/etc/certs/”: MODIFY|ATTRIB
2018-08-27T12:57:56.018118Z info watchFileEvents: “/etc/certs//…2018_08_27_05_04_19.862743226”: MODIFY|ATTRIB
2018-08-27T12:58:06.018249Z info watchFileEvents: notifying
2018-08-27T12:59:12.086320Z info watchFileEvents: “/etc/certs/”: MODIFY|ATTRIB
2018-08-27T12:59:12.086431Z info watchFileEvents: “/etc/certs//…2018_08_27_05_04_19.862743226”: MODIFY|ATTRIB
2018-08-27T12:59:22.086533Z info watchFileEvents: notifying