[orchestrator] Pass to nailgun nodes which
need to redeploy in case of errors
* if controller was failed, redeploy
  all controllers of cluster
* if non-controller was failed,
  redeploy only this node
[orchestrator] sort nodes by id and fix selection of primary controller
[tasks] set pending_addition to False when nodes were serialized
fix flake8
Merge pull request #1608 from Mirantis/fix-error-nodes-redeployment

Fix error nodes redeployment