Constantinople HF on POA Core (#10606)

* Constantinople HF on POA Core

Plan Constantinople/St.Petersfork HF on POA Core network at block 8582254.
Original PR in POA repository: poanetwork/poa-chain-spec#110

* Remove extra empty line

Author: phahulin

ethcore/res/ethereum/poacore.json

@@ -34,7 +34,10 @@
 		"eip140Transition": "0x0",
 		"eip211Transition": "0x0",
 		"eip214Transition": "0x0",
-		"eip658Transition": "0x0"
+		"eip658Transition": "0x0",
+		"eip145Transition": 8582254,
+		"eip1014Transition": 8582254,
+		"eip1052Transition": 8582254
 	},
 	"genesis": {
 		"seal": {