Fix old Tests.py; networkstatus.parseALine returns a string.
Fix old Tests.py; networkstatus.parseALine returns a string.

 * CHANGE test_regressionsNewCode_IPBridgeDistTests_testDistWithFilterIP4()
   and test_regressionsNewCode_IPBridgeDistTests_testDistWithFilterIP6() to
   convert the string returned from networkstatus.parseALine into an
   ipaddr.IPAddress.

pagea/bridgedb,pagea/bridgedb