Node stop is not called before deletion

[Duc Truong]

1. Create cluster with 2 nodes. One of the node failed to create and its physical id is None
2. Scale in cluster with step size 2
3. First node will not enter wait for lifecycle completion because its physical id is None

Expected Results:
Second node is stopped and then deleted.

Actual Results:
Stop is never called for second node. The stop operation is stuck in INIT and eventually fails due to timeout. Then node delete is called

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/638035
Committed: https://git.openstack.org/cgit/openstack/senlin/commit/?id=3e70333a65dd168c2c4a4d8839d2980e54152697
Submitter: Zuul
Branch: master

commit 3e70333a65dd168c2c4a4d8839d2980e54152697
Author: Duc Truong <email address hidden>
Date: Tue Feb 19 22:38:51 2019 +0000

    Fix node delete with lifecycle hook bug

    Create copy of child node list and remove nodes from the original child
    list if a node does not need to enter waiting lifecycle completion
    because it is not found or not in ACTIVE state.

    Change-Id: I04d57f4deb2f9f46aba1d9d4a566cb90dbe74d96
    Closes-Bug: #1816677

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/senlin 7.0.0.0b1 development milestone.