D11010: Add MSG_SLAVE_STATUS_V2 to slave interface

[Chinmoy Ranjan Pradhan]

chinmoyr added a dependent revision: D10820: Send slave's polkit authorization 
status to the host.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D11010

To: chinmoyr, dfaure
Cc: #frameworks, michaelh