NN-10715 | fixed authentication
NN-10715 | small fix
NN-10715 | add detected rpc version
NN-10715 | add define rpc version
NN-10715 | Code review.
Merge pull request #13 from irek02/feature/NN-10715

NN-10715 | As acquia_connector 8.x developer I want to implement the same authentication mechanism as in 7.x