Fuel cli ignores optional arguments "--json"

[Egor Kotko]

{"build_id": "2014-04-14_01-00-26", "mirantis": "yes", "build_number": "101", "nailgun_sha": "61410bcf3201cd737e68ece8ab15313acc746476", "production": "dev", "ostf_sha": "118c955085ea7829f3a34decd38d63554b74451c", "fuelmain_sha": "ddc94c52c267f0276cbd8485d6e704aea05b23a5", "astute_sha": "401bc474b1d8cebb8ba70b3b6154107e08fd725d", "release": "5.0", "fuellib_sha": "101f3645ead182bc47024ff7568b04554de06bba"}

Steps to reproduce:
1) Create environment
2) Execute on master node:
#fuel settings --download --env 1 --json

Expected result:
The command should generates file settings_1.json,

Actual result:
The command generates file settings_1.yaml

The same is about command:
fuel settings --upload --dir /root/settings --json --env 1 - It ignores argument --json, appears alert that there is no *.yaml file in the directory.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/87331

[Openstack Gerrit (openstack-gerrit)]

Reviewed: https://review.openstack.org/87331
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=cf54bd27a0beb20edee611ea55f1dcc5070b67db
Submitter: Jenkins
Branch: master

commit cf54bd27a0beb20edee611ea55f1dcc5070b67db
Author: Alexandr Notchenko <email address hidden>
Date: Mon Apr 14 21:18:28 2014 +0400

    File Serialization problem

     * Fixed serialization with flags
     * Fixed several command stdout messages
     * Fixed empty facts exception

     Closes-bug: #1307577
     Closes-bug: #1307516

    Change-Id: Iecbd12959c4f8e707249c6a58df0cc5e432fd1df

[Egor Kotko (ykotko)]

Checked on:
{"build_id": "2014-05-16_01-10-31", "mirantis": "yes", "build_number": "208", "ostf_sha": "353f918197ec53a00127fd28b9151f248a2a2d30", "nailgun_sha": "89e7224f0b87284f75bf02b956b640768fabe352", "production": "docker", "api": "1.0", "fuelmain_sha": "861f4410bd07ecf40c1f87785dd0c86de387f2cf", "astute_sha": "c0418e1739cceb864fd2c548a7c6b9ad6a46ed86", "release": "5.0", "fuellib_sha": "68ef90fdc9fe5a3978f756a96a3fa29d5f1a2929"}