WebUI: regression: exceptions in horizon with 'yaml.scanner'

[Timur Nurlygayanov]

Moved to https://bugs.launchpad.net/murano/+bug/1212185

*Steps to Reproduce:*
1. Install WebUI and login to horizon dashboard

*Observer Result:*
Error:
{code}
No module named yaml.scanner
{code}
(please see attached screenshot for more detailed information)

{code}
[Wed Aug 07 09:23:14 2013] [notice] Apache/2.2.22 (Ubuntu) mod_wsgi/3.4 Python/2.7.3 configured -- resuming normal operations
[Wed Aug 07 09:26:58 2013] [error] [client 172.18.78.30] File does not exist: /var/www/favicon.ico
[Wed Aug 07 13:27:08 2013] [error] ERROR:django.request:Internal Server Error: /horizon/
[Wed Aug 07 13:27:08 2013] [error] Traceback (most recent call last):
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 89, in get_response
[Wed Aug 07 13:27:08 2013] [error] response = middleware_method(request)
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/middleware/locale.py", line 21, in process_request
[Wed Aug 07 13:27:08 2013] [error] check_path = self.is_language_prefix_patterns_used()
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/middleware/locale.py", line 54, in is_language_prefix_patterns_used
[Wed Aug 07 13:27:08 2013] [error] for url_pattern in get_resolver(None).url_patterns:
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/core/urlresolvers.py", line 328, in url_patterns
[Wed Aug 07 13:27:08 2013] [error] patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/core/urlresolvers.py", line 323, in urlconf_module
[Wed Aug 07 13:27:08 2013] [error] self._urlconf_module = import_module(self.urlconf_name)
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
[Wed Aug 07 13:27:08 2013] [error] __import__(name)
[Wed Aug 07 13:27:08 2013] [error] File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/urls.py", line 36, in <module>
[Wed Aug 07 13:27:08 2013] [error] url(r'', include(horizon.urls))
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/conf/urls/__init__.py", line 25, in include
[Wed Aug 07 13:27:08 2013] [error] patterns = getattr(urlconf_module, 'urlpatterns', urlconf_module)
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/utils/functional.py", line 184, in inner
[Wed Aug 07 13:27:08 2013] [error] self._setup()
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/utils/functional.py", line 248, in _setup
[Wed Aug 07 13:27:08 2013] [error] self._wrapped = self._setupfunc()
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/base.py", line 715, in url_patterns
[Wed Aug 07 13:27:08 2013] [error] return self._urls()[0]
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/base.py", line 746, in _urls
[Wed Aug 07 13:27:08 2013] [error] url(r'^%s/' % dash.slug, include(dash._decorated_urls)))
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/base.py", line 456, in _decorated_urls
[Wed Aug 07 13:27:08 2013] [error] url(r'^%s/' % panel.slug, include(panel._decorated_urls)))
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/base.py", line 230, in _decorated_urls
[Wed Aug 07 13:27:08 2013] [error] urlpatterns = self._get_default_urlpatterns()
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/base.py", line 83, in _get_default_urlpatterns
[Wed Aug 07 13:27:08 2013] [error] urls_mod = import_module('.urls', package_string)
[Wed Aug 07 13:27:08 2013] [error] File "/usr/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
[Wed Aug 07 13:27:08 2013] [error] __import__(name)
[Wed Aug 07 13:27:08 2013] [error] File "/usr/local/lib/python2.7/dist-packages/muranodashboard/panel/urls.py", line 17, in <module>
[Wed Aug 07 13:27:08 2013] [error] from views import IndexView, DeploymentDetailsView
[Wed Aug 07 13:27:08 2013] [error] File "/usr/local/lib/python2.7/dist-packages/muranodashboard/panel/views.py", line 30, in <module>
[Wed Aug 07 13:27:08 2013] [error] from tables import EnvironmentsTable
[Wed Aug 07 13:27:08 2013] [error] File "/usr/local/lib/python2.7/dist-packages/muranodashboard/panel/tables.py", line 23, in <module>
[Wed Aug 07 13:27:08 2013] [error] from muranodashboard.panel import api
[Wed Aug 07 13:27:08 2013] [error] File "/usr/local/lib/python2.7/dist-packages/muranodashboard/panel/api.py", line 23, in <module>
[Wed Aug 07 13:27:08 2013] [error] from muranodashboard.panel.services import get_service_name
[Wed Aug 07 13:27:08 2013] [error] File "/usr/local/lib/python2.7/dist-packages/muranodashboard/panel/services/__init__.py", line 18, in <module>
[Wed Aug 07 13:27:08 2013] [error] from yaml.scanner import ScannerError
[Wed Aug 07 13:27:08 2013] [error] ImportError: No module named yaml.scanner

{code}

[Timur Sufiev (tsufiev-x)]

Bug fixed in release-0.2