* Clean up identities in CashTests so that the mini/mega corp keys and identities are correctly
paired together throughout. Previously `miniCorpServices` presented the same key as the
MegaCorp identity, but with the name Mini Corp attached.
* Correct key/name matches in VaultWithCashTest
* Split services in CashTests to not have multiple identities per service hub
The motivation for this came with the recent change that a default notary is started by the driver, which if ignored will leak the notary process.
Also, waitForAllNodesToFinish() has been replaced by a driver parameter.
network-parameters file read in by the node at startup, of which only the list of notaries is used. For now, the driver and MockNetwork have been updated to require notaries to be started first. This is so that the same set of network parameters can be defined for all the nodes.
CN in the legal name is not longer disallowed since it's no longer reserved for distributed notary names.
Single-node notaries now only have one identity, their main identity. Nodes part of a cluster continue to have two.
(Based off Kasia's work)
approach which assumes a dedicated node for observers: states that are
reported to the node will appear in the database and update feeds as
normal. Apps that expect all updates to be relevant to themselves may
need adjusting if they run on an observer node too, but this is likely
to be rare.
