Always call detect transceivers, so we can detect if transceiver has been removed
Always call detect transceivers, so we can detect if transceiver has been removed

Summary: Previously if a transceiver had ever been present, we would still consider it that and just silently fail to read from it. Always refresh this data instead.

Reviewed By: aeckert

Differential Revision: D5071036

fbshipit-source-id: 8db6da1b9a4d2d300c651d962d61ac08b2242002

peterlei/fboss,peterlei/fboss,peterlei/fboss,peterlei/fboss