MEDIUM: log: handle log-profile in process_send_log()

MEDIUM: log: handle log-profile in process_send_log()

In previous commit we implemented log-profile parsing logic. Now let's
actually make use of available log-profile information from logger struct
to decide whether we need to rebuild the logline under process_send_log()
according to log profile settings. Nothing is done if the logger didn't
specify a log-profile.