Vitrage is not notified on Heat stack creation

[Ifat Afek]

Vitrage does not get a notification when a new Stack is created in Heat. The stack appears in the graph only after the next get-all.

To reproduce:
- Create a Heat stack
- Check the Vitrage entity graph, or run "vitrage topology show". The stack is not there.
- Restart vitrage-graph and vitrage-collector. The stack appears.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/493780

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/pike
Review: https://review.openstack.org/493806

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/493780
Committed: https://git.openstack.org/cgit/openstack/vitrage/commit/?id=7cd46bd71e612f539b9c4da826676b5b112f5457
Submitter: Jenkins
Branch: master

commit 7cd46bd71e612f539b9c4da826676b5b112f5457
Author: Anna <email address hidden>
Date: Tue Aug 15 08:12:44 2017 +0000

    change the way heat client is created

    Closes-Bug: #1710473

    Change-Id: I95071b1a552ab2ea7de0ac2f88ca5b80f642ac73

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/493806
Committed: https://git.openstack.org/cgit/openstack/vitrage/commit/?id=3a90745853f65c19bf5faf149d3c4eef547788b5
Submitter: Jenkins
Branch: stable/pike

commit 3a90745853f65c19bf5faf149d3c4eef547788b5
Author: Anna <email address hidden>
Date: Tue Aug 15 08:12:44 2017 +0000

    change the way heat client is created

    Change-Id: I519302ab698be4c10dfa47b64cf3ec2c3d8a7e93
    Closes-Bug: #1710473

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/vitrage 1.8.1 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/vitrage 2.0.0 release.