[Upgrade] Upgrade failed on check mcollective health after upgrade step

[Tatyanka]

{"build_id": "2014-07-03_12-42-15", "mirantis": "yes", "build_number": "89", "ostf_sha": "d0fe60e0eba61685008b86d101f459fc2d3bb654", "nailgun_sha": "5c18e962d85b878e53ff6eb6eeeb14658814c5b8", "production": "docker", "api": "1.0", "fuelmain_sha": "1072bc723d14427d5fdc24662ffe1af0641e0d9a", "astute_sha": "644d279970df3daa5f5a2d2ccf8b4d22d53386ff", "release": "5.0.1", "fuellib_sha": "385d713b569bc0633e695b44ff7eedf3417f0575"}

Steps to reproduce:
1. Deploy ha cluster woth 1 controller on centos
2. Upload 24 tarball to the master node
3. Run upgrade script(docker, host-system )

Expected:
Upgrade passed

Actual:
Upgrade failed with message:
http://paste.openstack.org/show/85420/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/104573

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/104573
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=a992f10c2da19e324c88e658103090631c41e259
Submitter: Jenkins
Branch: master

commit a992f10c2da19e324c88e658103090631c41e259
Author: Evgeniy L <email address hidden>
Date: Thu Jul 3 18:41:35 2014 +0400

    Upgrader, check status code before body pasring in mcollective checker

    Sometimes mcollective returns string which
    is correct json, as result when we
    iterate over this string we get an error
    beacuse we expected list of dicts.

    blueprint upgrade-to-5-1
    Closes-bug: #1337337
    Change-Id: I8d3f608df7591dcabc36f8e69bcc368d3babbf8a

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/5.0
Review: https://review.openstack.org/104862

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/104862
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=7eefa39cf1bb2fd9bd8e90be1470389c116341fa
Submitter: Jenkins
Branch: stable/5.0

commit 7eefa39cf1bb2fd9bd8e90be1470389c116341fa
Author: Evgeniy L <email address hidden>
Date: Thu Jul 3 18:41:35 2014 +0400

    Upgrader, check status code before body pasring in mcollective checker

    Sometimes mcollective returns string which
    is correct json, as result when we
    iterate over this string we get an error
    beacuse we expected list of dicts.

    blueprint upgrade-to-5-0-1

    Closes-bug: #1337337

    Change-Id: I8d3f608df7591dcabc36f8e69bcc368d3babbf8a

[Andrey Sledzinskiy (asledzinskiy)]

verified on fuel-5.1-upgrade-4-2014-09-12_00-01-11.tar.lrz