Bitcoin to NYC3 and update gitian compile code

test/functional/mining_getblocktemplate_longpoll.py

@@ -1,12 +1,12 @@
 #!/usr/bin/env python3
-# Copyright (c) 2014-2018 The Bitcoin Core developers
+# Copyright (c) 2014-2018 The NYC3 Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test longpolling with getblocktemplate."""
 
 from decimal import Decimal
 
-from test_framework.test_framework import BitcoinTestFramework
+from test_framework.test_framework import NYC3TestFramework
 from test_framework.util import get_rpc_proxy, random_transaction
 
 import threading
@@ -24,7 +24,7 @@ class LongpollThread(threading.Thread):
     def run(self):
         self.node.getblocktemplate({'longpollid': self.longpollid, 'rules': ['segwit']})
 
-class GetBlockTemplateLPTest(BitcoinTestFramework):
+class GetBlockTemplateLPTest(NYC3TestFramework):
     def set_test_params(self):
         self.num_nodes = 2