Fuel CLI doen't convert --fuel-version to JSON if used the option --json

[Dennis Dmitriev]

Here is an example:

[root@nailgun ~]# fuel --fuel-version --json
api: '1.0'
astute_sha: 82125b0eef4e5a758fd4afa8917812e09a1f7dac
auth_required: true
build_id: 2015-01-14_22-54-45
build_number: '61'
feature_groups:
- mirantis
fuellib_sha: 89f7c94d65f75ebff01898b40aa3931bd52a8a61
fuelmain_sha: ''
nailgun_sha: bfb5ee4940555a3270362bb449fc1af4add43f20
ostf_sha: 92ad9f8e4c509c82e07ceb093b5d579205c76014
production: docker
release: '6.1'
release_versions:
  2014.2-6.0:
    VERSION:
      api: '1.0'
      astute_sha: 82125b0eef4e5a758fd4afa8917812e09a1f7dac
      build_id: 2015-01-14_22-54-45
      build_number: '61'
      feature_groups:
      - mirantis
      fuellib_sha: 89f7c94d65f75ebff01898b40aa3931bd52a8a61
      fuelmain_sha: ''
      nailgun_sha: bfb5ee4940555a3270362bb449fc1af4add43f20
      ostf_sha: 92ad9f8e4c509c82e07ceb093b5d579205c76014
      production: docker
      release: '6.1'

Expected: the same information in JSON format.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/169702

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/169702
Committed: https://git.openstack.org/cgit/stackforge/python-fuelclient/commit/?id=150f2b559e6699d84bccb85754ff417de6472771
Submitter: Jenkins
Branch: master

commit 150f2b559e6699d84bccb85754ff417de6472771
Author: Sebastian Kalinowski <email address hidden>
Date: Wed Apr 1 13:09:12 2015 +0200

    Respect format when printing Fuel's VERSION

    * Used Serializer when printing VERSION
    * Format flags are now a mutually exclusive
    * Format is now stored in one parser attribute - before it was
      one boolean attribute per format
    * APIClient.get_fuel_version() now returns Python dict instead of
      formatted YAML
    * added 'consts' file

    Change-Id: I3861dc34aa2838712408bd715e3af48762b9fd9b
    Closes-Bug: #1411661