Rotate ports third time for default obfs4 bridges

Rotate ports again.

LeifEricson (blocked): Port 50001 --> 50002 Greenbelt (unblocked): Port 7013 --> 12166 Mosaddegh (blocked): Port 9332 --> 15937 MaBishomarim (blocked): Port 7920 --> 16488 JonbesheSabz (blocked): Port 4148 --> 4304 Azadi (unblocked): Port 6041 --> 16815

Trac:
Username: lynntsai

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