ganeti.http: Prepare authentication for HTTP server
ganeti.http: Prepare authentication for HTTP server

The authentication class will override PreHandleRequest.

Reviewed-by: amishchenko


ganeti-github-testing/ganeti-test-1,bitemyapp/ganeti,andir/ganeti,yiannist/ganeti,ganeti/ganeti,onponomarev/ganeti,mbakke/ganeti,leshchevds/ganeti,apyrgio/ganeti,mbakke/ganeti,yiannist/ganeti,mbakke/ganeti,andir/ganeti,yiannist/ganeti,dimara/ganeti,grnet/snf-ganeti,andir/ganeti,onponomarev/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/snf-ganeti,dimara/ganeti,bitemyapp/ganeti,apyrgio/snf-ganeti,leshchevds/ganeti,apyrgio/ganeti,leshchevds/ganeti,grnet/snf-ganeti,ganeti/ganeti,ganeti/ganeti