message: indexer-service: Collateralize state channels after connecting
  This makes sure there are no delays in processing payments later.
diff: @@ -119,6 +119,12 @@ export class StateChannel implements StateChannelInterface {
  storePrefix: derivedKeyPair.address.substr(2),
  })
  + // Collateralize the channel immediately, so there are no delays later;
  + // otherwise the first payment to the channel would cause an on-chain
  + // collateralization, which, depending on the Ethereum network, can
  + // take minutes
  + await client.requestCollateral(constants.AddressZero)
  +
  // Obtain current free balance
  const freeBalance = await client.getFreeBalance(constants.AddressZero)
  const balance = freeBalance[client.signerAddress]
  