daemon.GanetiBaseAsyncoreDispatcher
daemon.GanetiBaseAsyncoreDispatcher

Abstract a few common functionalities between all ganeti asyncore
dispatchers:
  - Handle errors by logging them, and then continue
  - By default check sockets only for readability

Signed-off-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>
Reviewed-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>

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