Some Elasticsearch metrics are missing

[Simon Pasquier]

On a fresh installation with StackLight 0.9 and MOS 8, I see that some Elasticsearch metrics are missing:
- initializing_shards
- relocating_shards
- unassigned_shards
- number_of_pending_tasks
- initializing_shards

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/304060

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/304060
Committed: https://git.openstack.org/cgit/openstack/fuel-plugin-lma-collector/commit/?id=2136cc8d4bd9fc2ad81898eb95b6caa69966fc6c
Submitter: Jenkins
Branch: master

commit 2136cc8d4bd9fc2ad81898eb95b6caa69966fc6c
Author: Simon Pasquier <email address hidden>
Date: Mon Apr 11 13:36:27 2016 +0200

    Fix missing Elasticsearch metrics

    When the metric's value was 0, it was skipped by the collectd plugin.

    Change-Id: I5d9adf51c38c2cf24dfc37a0992a26f3bd8baa00
    Closes-Bug: #1568814

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/0.9
Review: https://review.openstack.org/304069

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/304069
Committed: https://git.openstack.org/cgit/openstack/fuel-plugin-lma-collector/commit/?id=934fd4506a0acc34d46a8f6ae6f34260f16ada9a
Submitter: Jenkins
Branch: stable/0.9

commit 934fd4506a0acc34d46a8f6ae6f34260f16ada9a
Author: Simon Pasquier <email address hidden>
Date: Mon Apr 11 13:36:27 2016 +0200

    Fix missing Elasticsearch metrics

    When the metric's value was 0, it was skipped by the collectd plugin.

    Change-Id: I5d9adf51c38c2cf24dfc37a0992a26f3bd8baa00
    Closes-Bug: #1568814
    (cherry picked from commit 2136cc8d4bd9fc2ad81898eb95b6caa69966fc6c)