Wrong code completion for umm functionality

[Veronica Krayneva]

Steps:
1. Disable umm (umm disable ) - Command works correctly!
2. Check code completion - echo $?

Expected result:
0
Actual:
1

And this:
1. Disable umm (umm disable ) - Command works correctly!
2. Enforce MM mode (umm on )
3. Check code completion - echo $?

Expected result:
1
Actual:
0

And this:
1. Enable umm (umm enable ) - Command works correctly!
2. Rights code completion
3. Enable umm (umm enable )
4. Check code completion - echo $?
Expected result:
1
Actual:
0

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "6.1"
  openstack_version: "2014.2-6.1"
  api: "1.0"
  build_number: "337"
  build_id: "2015-04-21_22-54-31"
  nailgun_sha: "3928c5aee6e7aabad37cf0665acc6790ef220141"
  python-fuelclient_sha: "08640730176591a3818f24e75b710f8c95846e6e"
  astute_sha: "bf1751a4fe0d912325e3b4af629126a59c1b2b51"
  fuel-library_sha: "af4eee78a4dd6e6606079f5515bac91c45b04114"
  fuel-ostf_sha: "df8db1f48f03b18126ce5ec65317a1eb83a5a95f"
  fuelmain_sha: "aad0a7ad97a5660f5d53fa830b168d36fa9694eb"

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/176906

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/176906
Committed: https://git.openstack.org/cgit/stackforge/fuel-library/commit/?id=ea8433c9b45b748e08568df2801c5d84cb3bae30
Submitter: Jenkins
Branch: master

commit ea8433c9b45b748e08568df2801c5d84cb3bae30
Author: Peter Zhurba <email address hidden>
Date: Thu Apr 23 19:33:47 2015 +0300

    UMM errorlevel fix
    Related-bug:#1447186

    Change-Id: If85c481e8ba0cfb53dd303fb44b912f402d0c640

[Veronica Krayneva (vkrayneva)]

Verified.
VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "6.1"
  openstack_version: "2014.2.2-6.1"
  api: "1.0"
  build_number: "388"
  build_id: "2015-05-07_03-59-48"
  nailgun_sha: "7437e500c3e2673b124af4c7634ac04121b1c949"
  python-fuelclient_sha: "af6c9c3799b9ec107bcdc6dbf035cafc034526ce"
  astute_sha: "83b23783edbfacd25aded7a79e0aca17fc883e79"
  fuel-library_sha: "a7a794e68086014f8163f79a3dad1c9a074b1f3a"
  fuel-ostf_sha: "1a09c09ee7f6b7622dfc7e37dce70c4537c0b532"
  fuelmain_sha: "68e6f08e23845516e1995df59e038ebecb26e6b8"