[ui] Settings are not validated when the tab opened

[Julia Aranovich]

Create Neutron-NSX environment and go to the Settings tab. No errors are shown (!). Click Deploy Changes dialog. There is an alert about invalid settings.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/161239

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/161239
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=272d2d66db9945ab69df97ee157bce861f9b00c6
Submitter: Jenkins
Branch: master

commit 272d2d66db9945ab69df97ee157bce861f9b00c6
Author: Julia Aranovich <email address hidden>
Date: Wed Mar 4 17:35:35 2015 +0300

    Validate data when the Settings tab is opened

    Closes-Bug: #1428154

    Change-Id: Id92e3f7a6db197508cbe6306671e7f97138dda02

[Anastasia Palkina (apalkina)]

Verified on ISO #163

"build_id": "2015-03-05_00-24-56", "ostf_sha": "b47bb2ad09e60a25040e21f250018e256f3bebdd", "build_number": "163", "release_versions": {"2014.2-6.1": {"VERSION": {"build_id": "2015-03-05_00-24-56", "ostf_sha": "b47bb2ad09e60a25040e21f250018e256f3bebdd", "build_number": "163", "api": "1.0", "nailgun_sha": "0bfcbcaaaebce2511ce3553a3f5864ffd93ecf1d", "production": "docker", "python-fuelclient_sha": "4eb787f1ad969bd23c93d192865543dbd45a8626", "astute_sha": "ca7635a356a90404d3dedb5cf26f1d16e07144a9", "feature_groups": ["mirantis"], "release": "6.1", "fuelmain_sha": "3937483ff533967a9c407c45d1118bc3df67c60c", "fuellib_sha": "9b1948b210e70dab0c39d8ca7cc767f626684b37"}}}, "auth_required": true, "api": "1.0", "nailgun_sha": "0bfcbcaaaebce2511ce3553a3f5864ffd93ecf1d", "production": "docker", "python-fuelclient_sha": "4eb787f1ad969bd23c93d192865543dbd45a8626", "astute_sha": "ca7635a356a90404d3dedb5cf26f1d16e07144a9", "feature_groups": ["mirantis"], "release": "6.1", "fuelmain_sha": "3937483ff533967a9c407c45d1118bc3df67c60c", "fuellib_sha": "9b1948b210e70dab0c39d8ca7cc767f626684b37"}