[#90] Updated RPC model test

- assume that versioned mediatypes are present by default
[#90] Provide versioned mediatype to RPC whitelists

- Provides versioned mediatype to RPC accept and content-type whitelists
  by default.
Merge branch 'hotfix/90'

Close #90

Provide versioned mediatype in accept and content-type whitelists for RPC
services.