update chain-id format (#542)

* chain_id.go

* rpc changes

* update scripts

* additional test

* changelog

* fix tests

* update script

* rpc updates

* validate testnet command chain-id

* validate rest server chain-id

* fix lint

* rpc updates

* changelog

* comment simulations

tests-solidity/README.md

@@ -25,7 +25,7 @@ In the first, run `ethermintd`:
 In the second, run `ethermintcli` as mentioned in the script's output:
 
 ```sh
-ethermintcli rest-server --laddr "tcp://localhost:8545" --unlock-key localkey,user1,user2 --chain-id 1337 --trace --wsport 8546
+ethermintcli rest-server --laddr "tcp://localhost:8545" --unlock-key localkey,user1,user2 --chain-id "ethermint-1337" --trace --wsport 8546
 ```
 
 You will now have three ethereum accounts unlocked in the test node:
@@ -83,7 +83,7 @@ Running `ethermintcli list keys` should output:
 
 And running:
 
-```
+```sh
 curl localhost:8545 -H "Content-Type:application/json" -X POST --data '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":1}'
 ```
 

tests-solidity/init-test-node.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-CHAINID=1337
+CHAINID="ethermint-1337"
 MONIKER="localtestnet"
 
 VAL_KEY="localkey"