contracts: kovan scc 10 second fraud proof window

Update the SCC being used on kovan with a 10 second
fraud proof window. This makes testing withdrawals very
easy.

packages/contracts/deployments/README.md

@@ -69,7 +69,7 @@ Network : __kovan (chain id: 42)__
 |OVM_L1CrossDomainMessenger|[0x86EBb8c797cC4768004182D0B2f43B42b9a72e2c](https://kovan.etherscan.io/address/0x86EBb8c797cC4768004182D0B2f43B42b9a72e2c)|
 |Proxy__L1CrossDomainMessenger|[0x4361d0F75A0186C05f971c566dC6bEa5957483fD](https://kovan.etherscan.io/address/0x4361d0F75A0186C05f971c566dC6bEa5957483fD)|
 |Proxy__L1StandardBridge|[0x22F24361D548e5FaAfb36d1437839f080363982B](https://kovan.etherscan.io/address/0x22F24361D548e5FaAfb36d1437839f080363982B)|
-|StateCommitmentChain|[0x3deD8656a19D12814d04037Cc1b9E77E653983B3](https://kovan.etherscan.io/address/0x3deD8656a19D12814d04037Cc1b9E77E653983B3)|
+|StateCommitmentChain|[0x2C1561bA6b4e6EDF8Ca40F12955C36477747Ff11](https://kovan.etherscan.io/address/0x2C1561bA6b4e6EDF8Ca40F12955C36477747Ff11)|
 <!--
 Implementation addresses. DO NOT use these addresses directly.
 Use their proxied counterparts seen above.

packages/contracts/deployments/kovan/StateCommitmentChain.json

 {
-  "address": "0x3deD8656a19D12814d04037Cc1b9E77E653983B3",
+  "address": "0x2C1561bA6b4e6EDF8Ca40F12955C36477747Ff11",
   "abi": [
     {
       "inputs": [
@@ -361,25 +361,25 @@
       "type": "function"
     }
   ],
-  "transactionHash": "0x1764c2d85b49d96717c22ca0d9e15d69809870e8b815fbcc83f60e8fe8aa0083",
+  "transactionHash": "0x6e2fa863f56f0b75ddf9c62b8262b9e67c7fdab46993ebdf885da381b2708a0a",
   "receipt": {
     "to": null,
     "from": "0x18394B52d3Cb931dfA76F63251919D051953413d",
-    "contractAddress": "0x3deD8656a19D12814d04037Cc1b9E77E653983B3",
-    "transactionIndex": 0,
-    "gasUsed": "1888197",
+    "contractAddress": "0x2C1561bA6b4e6EDF8Ca40F12955C36477747Ff11",
+    "transactionIndex": 7,
+    "gasUsed": "1888173",
     "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
-    "blockHash": "0xb3c36ff01c489ace9c6390efc9404ad1987e2439161f7535bc25a81e322cf12a",
-    "transactionHash": "0x1764c2d85b49d96717c22ca0d9e15d69809870e8b815fbcc83f60e8fe8aa0083",
+    "blockHash": "0x4f5726ca87837f927a7c381662ca24c6f02ac57f08565775dea0b9625375fbb2",
+    "transactionHash": "0x6e2fa863f56f0b75ddf9c62b8262b9e67c7fdab46993ebdf885da381b2708a0a",
     "logs": [],
-    "blockNumber": 27717442,
-    "cumulativeGasUsed": "1888197",
+    "blockNumber": 27947246,
+    "cumulativeGasUsed": "2461003",
     "status": 1,
     "byzantium": true
   },
   "args": [
     "0x100Dd3b414Df5BbA2B542864fF94aF8024aFdf3a",
-    604800,
+    10,
     12592000
   ],
   "solcInputHash": "85fb691d85cfc56b2b8339f63294b676",