[wallet] [tests] Test disallowed multiwallet params
[wallet] [tests] Test disallowed multiwallet params

Add a test to check that bitcoind fails to start when specifying
-zapwallettxes, -salvagewallet and -upgradewallet when running in
multiwallet mode.

DigitalPandacoin/pandacoin,peercoin/peercoin,peercoin/peercoin,DigitalPandacoin/pandacoin,peercoin/peercoin,peercoin/peercoin,DigitalPandacoin/pandacoin,peercoin/peercoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,peercoin/peercoin,DigitalPandacoin/pandacoin