Summary:
Changelog: Initiate cert exchange when medium changes
Fixes the following bug:
1. Start an iOS app with WWW cert exchange
2. Get cert (and fake serial of a virtual device)
3. Close app
4. Restart Flipper
5. Switch app to FS_ACCESS cert exchange
6. Start app
Expected result:
App re-initializes cert exchange to get a new serial of a real device
Current result:
App tries to connect securely using the previous fake serial of a virtual device. Flipper does not recognize it and refuses the connection.
Reviewed By: lblasa
Differential Revision: D33163798
fbshipit-source-id: 67126a9b562f2cb7cfe6521a46abf38b2699fb2d