[murano] Environment hangs in "Deleting" status until page is reloaded

[Anastasia Kuznetsova]

Steps to reproduce:
1. Log in WebUI
2. Import some Murano application
3. Create Murano environment
4. Add imported application to the created environment
5. Deploy environment, wait for finish
6. Select deployed environment, click on "Delete environment" and stay on this page

Expected result:
Selected environment will be deleted and will disappear from the list

Actual result:
Environment is in "Deleting" state. It disappears from the list only after reloading the page.

https://bugs.launchpad.net/murano/+bug/1481474

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: openstack-ci/fuel-7.0/2015.1.0
Change author: Kirill Zaitsev <email address hidden>
Review: https://review.fuel-infra.org/10144

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/10144
Submitter: mos-infra-ci <>
Branch: openstack-ci/fuel-7.0/2015.1.0

Commit: 9f903df43620581bfad6acd1cb48377ea2f0b0a6
Author: Kirill Zaitsev <email address hidden>
Date: Thu Aug 6 10:47:52 2015

Return 404 to ajax environment update table call

Before a 404 exception from api was not properly handled and
returned 500 error to dashboard ajax call. This resulted in a deleteing
environment row being stuck until page reload.

Thi patch throws django Http404 in case the row has been deleted
successfully and let's other exception to be handled by the universal
handler. Also updates the handler to work with non-deprecated version of
exceptions from api calls.

Change-Id: Iea0a7ebe8589a064da082ceaabd37dd937ac1a5b
Closes-Bug: #1481428

[Anastasia Kuznetsova (akuznetsova)]

Verified on ISO:
[root@fuel ~]# cat /etc/nailgun/version.yaml
VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "7.0"
  openstack_version: "2015.1.0-7.0"
  api: "1.0"
  build_number: "286"
  build_id: "286"
  nailgun_sha: "5c33995a2e6d9b1b8cdddfa2630689da5084506f"
  python-fuelclient_sha: "1ce8ecd8beb640f2f62f73435f4e18d1469979ac"
  fuel-agent_sha: "082a47bf014002e515001be05f99040437281a2d"
  fuel-nailgun-agent_sha: "d7027952870a35db8dc52f185bb1158cdd3d1ebd"
  astute_sha: "8283dc2932c24caab852ae9de15f94605cc350c6"
  fuel-library_sha: "ff63a0bbc93a3a0fb78215c2fd0c77add8dfe589"
  fuel-ostf_sha: "1f08e6e71021179b9881a824d9c999957fcc7045"
  fuelmain_sha: "9ab01caf960013dc882825dc9b0e11ccf0b81cb0"