* Add roles to X509 certificates so that the identity service can always determine which certificate in a hierarchy is the well known identity
* Rename CLIENT_CA certificate type to NODE_CA
* Rename DOORMAN role to INTERMEDIATE_CA
* Correct issue in CashTests where instead of providing a well known identity to generateSpend(), a confidential identity was passed in and a confidential identity generated from it.
* Enforce role hierarchy in PKI
* Enforce that party certificates must be well known or confidential identities
* Add network map certificate role
