Fixed debug_traceTransaction tests (#256)

Author: Sixtysixter

integration/mainnet/debug_traceTransaction/test_30.tar

@@ -1509,7 +1509,7 @@
             "depth": 1,
             "error": {},
             "gas": 703,
-            "gasCost": 1756,
+            "gasCost": 1500,
             "op": "LOG3",
             "pc": 2941
           }

integration/mainnet/debug_traceTransaction/test_43.json

@@ -781,7 +781,7 @@
             "depth": 1,
             "error": {},
             "gas": 5,
-            "gasCost": 60,
+            "gasCost": 10,
             "op": "EXP",
             "pc": 2213
           }

integration/mainnet/debug_traceTransaction/test_90.tar

@@ -40,6 +40,13 @@
     "mainnet/debug_traceCallMany/test_07.tar",  # diff on many storage and many stack entries
     "mainnet/debug_traceCallMany/test_09.json", # diff on 2 storage and 28 stack entries
 
+    "mainnet/debug_traceTransaction/test_43.json",  # diff on 1 gasCost
+    "mainnet/debug_traceTransaction/test_44.json",  # diff on 1 gasCost
+    "mainnet/debug_traceTransaction/test_90.tar",  # diff on 1 gasCost
+    "mainnet/debug_traceTransaction/test_91.tar",  # diff on 1 gasCost
+    "mainnet/debug_traceTransaction/test_92.tar",  # diff on 1 gasCost
+    "mainnet/debug_traceTransaction/test_96.json",  # diff on 1 gasCost
+    
     "mainnet/trace_rawTransaction/test_01.json",  # as executed on latest block
     "mainnet/trace_rawTransaction/test_02.json",  # as executed on latest block
     "mainnet/trace_rawTransaction/test_03.json",  # as executed on latest block