ceilometer events aren't enabled in mos

[Ivan Berezovskiy]

During Juno upstream release cycle events storing in mongodb was implemented, so we need enable this feature in mos as well.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/143100

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/143100
Committed: https://git.openstack.org/cgit/stackforge/fuel-library/commit/?id=f4b7ffad407cdf2b3608fb05e7aa8a7263c44306
Submitter: Jenkins
Branch: master

commit f4b7ffad407cdf2b3608fb05e7aa8a7263c44306
Author: iberezovskiy <email address hidden>
Date: Fri Dec 19 17:36:39 2014 +0300

    Enable events in ceilometer

    Change-Id: Ifef25a02f7b9bf098b50d3a81269116874e1ee66
    Closes-bug: #1404185

[Anastasia Palkina (apalkina)]

Verified on ISO #58

"build_id": "2015-01-13_21-50-03", "ostf_sha": "0c1b663c6fc02ad972f2ed9ff6b000e7be1ea207", "build_number": "58", "auth_required": true, "api": "1.0", "nailgun_sha": "6fa6147384b533fb3d56cdc49ec6ecbcca47675d", "production": "docker", "fuelmain_sha": "", "astute_sha": "82125b0eef4e5a758fd4afa8917812e09a1f7dac", "feature_groups": ["mirantis"], "release": "6.1", "release_versions": {"2014.2-6.0": {"VERSION": {"build_id": "2015-01-13_21-50-03", "ostf_sha": "0c1b663c6fc02ad972f2ed9ff6b000e7be1ea207", "build_number": "58", "api": "1.0", "nailgun_sha": "6fa6147384b533fb3d56cdc49ec6ecbcca47675d", "production": "docker", "fuelmain_sha": "", "astute_sha": "82125b0eef4e5a758fd4afa8917812e09a1f7dac", "feature_groups": ["mirantis"], "release": "6.1", "fuellib_sha": "c53cb3a2bd5f99f32f78ed18e9472724fa6a9a9e"}}}, "fuellib_sha": "c53cb3a2bd5f99f32f78ed18e9472724fa6a9a9e"