[ui] Discarding of not deployed node changes causes js exception

[Julia Aranovich]

Steps to reproduce:

1. Create default env, add some node.
2. Click Discard button on the node panel.

There will be an excpetion in browser console.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/153246

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/153246
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=458d757beeb35080ca2595adea11e1f99a0520ef
Submitter: Jenkins
Branch: master

commit 458d757beeb35080ca2595adea11e1f99a0520ef
Author: Julia Aranovich <email address hidden>
Date: Thu Feb 5 18:04:08 2015 +0300

    Fix discarding of node changes

    Closes-Bug: #1413935

    Closes-Bug: #1418588

    Change-Id: I23716938665ba5d3ecaeaee9297ce9f7b65a4bc8

[Anastasia Palkina (apalkina)]

Verified on ISO #109

"build_id": "2015-02-09_22-54-44", "ostf_sha": "6c046b69d29021524906109f18092363505ee222", "build_number": "109", "release_versions": {"2014.2-6.1": {"VERSION": {"build_id": "2015-02-09_22-54-44", "ostf_sha": "6c046b69d29021524906109f18092363505ee222", "build_number": "109", "api": "1.0", "nailgun_sha": "71cb1dc573103e0faa6f54be687dd9fba57f6c8c", "production": "docker", "python-fuelclient_sha": "521c2491f7f04f31d8c85db68499cd193d4904e3", "astute_sha": "7e6e6f9188bd69c603853b10d4a55149363323cc", "feature_groups": ["mirantis"], "release": "6.1", "fuelmain_sha": "", "fuellib_sha": "4d04e7bb0472225e7d9f1f782f0525c8dba8cf06"}}}, "auth_required": true, "api": "1.0", "nailgun_sha": "71cb1dc573103e0faa6f54be687dd9fba57f6c8c", "production": "docker", "python-fuelclient_sha": "521c2491f7f04f31d8c85db68499cd193d4904e3", "astute_sha": "7e6e6f9188bd69c603853b10d4a55149363323cc", "feature_groups": ["mirantis"], "release": "6.1", "fuelmain_sha": "", "fuellib_sha": "4d04e7bb0472225e7d9f1f782f0525c8dba8cf06"