Add rounding helper function to util.py

Author: sdaftuar

qa/rpc-tests/mempool_packages.py

@@ -8,9 +8,6 @@
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import *
 
-def satoshi_round(amount):
-    return  Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
-
 MAX_ANCESTORS = 25
 MAX_DESCENDANTS = 25
 

qa/rpc-tests/smartfees.py

@@ -19,9 +19,6 @@
 # 4 bytes of OP_TRUE and push 2-byte redeem script of "OP_1 OP_DROP" or "OP_2 OP_DROP"
 SCRIPT_SIG = ["0451025175", "0451025275"]
 
-def satoshi_round(amount):
-    return  Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
-
 def small_txpuzzle_randfee(from_node, conflist, unconflist, amount, min_fee, fee_increment):
     '''
     Create and send a transaction with a random fee.

qa/rpc-tests/test_framework/util.py

@@ -404,3 +404,6 @@ def assert_raises(exc, fun, *args, **kwds):
         raise AssertionError("Unexpected exception raised: "+type(e).__name__)
     else:
         raise AssertionError("No exception raised")
+
+def satoshi_round(amount):
+    return  Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)