dash: Fix initialiseWallet

Only the upgradetohd command sets the hdseed
upgradetohd can only run once the chain is synced

Basicswap stores the hash of the root_key in it's db to check for the expected seed.
Prefer not to store the real key.

basicswap/interface/btc.py

@@ -293,6 +293,9 @@ class BTCInterface(CoinInterface):
     def getWalletSeedID(self):
         return self.rpc_callback('getwalletinfo')['hdseedid']
 
+    def checkExpectedSeed(self, expect_seedid):
+        return expect_seedid == self.getWalletSeedID()
+
     def getNewAddress(self, use_segwit, label='swap_receive'):
         args = [label]
         if use_segwit: