[multi-site-vim] Enable health monitoring for VIM

[Sripriya]

Now that we support multisite VIM within Tacker, we need to monitor VIMs for their health similar to VNFs. This is important as it will determine and impact the monitoring status of VNFs itself on the specific VIM.

Todo:

Monitor the remote VIM for identity service accessibility in periodic intervals.
Store the VIM status in DB.
Expose a status column on Horizon for VIM Management to indicate the VIM health status.
Display the status attribute on tacker-client

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/315475

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/315493

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/315475
Committed: https://git.openstack.org/cgit/openstack/tacker/commit/?id=792b1e01832cf4e846cd3b0e7e72e2bc1eb03932
Submitter: Jenkins
Branch: master

commit 792b1e01832cf4e846cd3b0e7e72e2bc1eb03932
Author: Bharath Thiruveedula <email address hidden>
Date: Thu May 12 16:19:13 2016 +0530

    Add monitor feature to the VIM

    This patch add monitoring feature to the VIM by checking the
    reachability of identity service for the corresponding VIM.

    Change-Id: I25beaa5e1fd2fca87503c45d720f89d6f8156622
    Closes-Bug: #1554280

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/315493
Committed: https://git.openstack.org/cgit/openstack/tacker-horizon/commit/?id=c040e497ca950eeb235d602180a81cd5fa0318c9
Submitter: Jenkins
Branch: master

commit c040e497ca950eeb235d602180a81cd5fa0318c9
Author: Bharath Thiruveedula <email address hidden>
Date: Thu May 12 16:56:39 2016 +0530

    Display VIM status in horizon

    Change-Id: I8866c84e700f5e5d4d33b743ca8b8dfc38adf51d
    Closes-Bug: #1554280
    Depends-On: I25beaa5e1fd2fca87503c45d720f89d6f8156622

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/python-tackerclient 0.5.0 release.

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/tacker 0.4.0 release.

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/tacker-horizon 0.4.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/tacker-horizon 0.4.0 release.