Update Wallet Address Response to include tenant ids in AS and RS base paths

[njlie]

In order to support multi-tenant Rafiki instances, the discovery response for wallet addresses need to be updated such that the authServer and resourceServer fields include the id of the wallet address' tenant in the base path. So for example, for a wallet address whose tenant has an id of 1234-1234 it should return:

{
  authServer: example.com/1234-1234
  resourceServer: example.com/1234-1234
}