Validate Input Parameters

[lindluni]

While deploying IBP with an HSM integration, I mistyped the variable name for the hsm.pkcs11endpoint. The result was that the endpoint was an empty string. The resultant error was read timeout which implied I had the wrong endpoint, or nothing was listening on the endpoint.

The underlying modules that require hsm information should parse the address to validate that it is at least properly formed, and if not can propagate a proper error back to the client. For example: https://stackoverflow.com/a/38020041/11352925