Corda RPC client load balancing parameter needs clarifying

Description

The CordaRPCClient documents an `haAddressPool` parameter for usage in load balancing / failover scenarios.

However, the description is slightly confusing to the end user for several reasons:
1. talks about HA mode, which is an Enterprise feature only
2. load balancing as per original intent is no longer possible with OS as there are complications with Artemis certificate registration when starting/stopping multiple instances (on same physical host), leading to inability to re-start a 2nd instance of a node:

See full discussion of failed test scenario here:
https://r3dlg.slack.com/archives/C8RFJCE65/p1552313870079600

Assignee

Bogdan Paunescu

Reporter

Jose Coll

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