Use version 2 CCbTx in create_coinbase to fix test failures

Author: codablock

qa/rpc-tests/test_framework/blocktools.py

@@ -56,7 +56,7 @@ def create_coinbase(height, pubkey = None, dip4_activated=False):
     if dip4_activated:
         coinbase.nVersion = 3
         coinbase.nType = 5
-        cbtx_payload = CCbTx(1, height, 0)
+        cbtx_payload = CCbTx(2, height, 0, 0)
         coinbase.vExtraPayload = cbtx_payload.serialize()
     coinbase.calc_sha256()
     return coinbase