fix: externalise test keys

Author: Westlad

config/default.js

@@ -36,9 +36,15 @@ module.exports = {
 optimistBaseUrl: `http://${process.env.OPTIMIST_HOST}:${process.env.OPTIMIST_HTTP_PORT}`,
 optimistWsUrl: `ws://${process.env.OPTIMIST_HOST}:${process.env.OPTIMIST_WS_PORT}`,
 web3WsUrl: `ws://${process.env.BLOCKCHAIN_WS_HOST}:${process.env.BLOCKCHAIN_PORT}`,
-userEthereumSigningKey: '0x4775af73d6dc84a0ae76f8726bda4b9ecf187c377229cb39e1afa7a18236a69e',
-zkpMnemonic: 'hurt labor ketchup seven scan swap dirt brown brush path goat together',
-proposerEthereumSigningKey: '0x4775af73d6dc84a0ae76f8726bda4b9ecf187c377229cb39e1afa7a18236a69d',
+userEthereumSigningKey:
+process.env.userEthereumSigningKey ||
+'0x4775af73d6dc84a0ae76f8726bda4b9ecf187c377229cb39e1afa7a18236a69e',
+zkpMnemonic:
+process.env.zkpMnemonic ||
+'hurt labor ketchup seven scan swap dirt brown brush path goat together',
+proposerEthereumSigningKey:
+process.env.proposerEthereumSigningKey ||
+'0x4775af73d6dc84a0ae76f8726bda4b9ecf187c377229cb39e1afa7a18236a69d',
 WEB3_OPTIONS: {
 gas: process.env.GAS || 1000000,
 gasPrice: process.env.GAS_PRICE || '20000000000',