Feature Improvement: Add TestSession Rejection when Extra or non-recognized/supported properties are present.

[asant57]

it is easy to fat finger or typo some of the JSON properties. for example ctrDRBG derFuncEnable instead of derFuncEnabled and the server just accepts derFuncEnable wihtout informing the user that there is an invalid/unrecognized property present. the server will continue on and proceed as if derFuncEnabled is set to false in this case.