Fix openid provider URL matching for usernames with non-word characters

lms/urls.py

@@ -244,7 +244,7 @@ if settings.MITX_FEATURES.get('AUTH_USE_OPENID'):
 if settings.MITX_FEATURES.get('AUTH_USE_OPENID_PROVIDER'):
     urlpatterns += (
         url(r'^openid/provider/login/$', 'external_auth.views.provider_login', name='openid-provider-login'),
-        url(r'^openid/provider/login/(?:[\w%\. ]+)$', 'external_auth.views.provider_identity', name='openid-provider-login-identity'),
+        url(r'^openid/provider/login/(?:.+)$', 'external_auth.views.provider_identity', name='openid-provider-login-identity'),
         url(r'^openid/provider/identity/$', 'external_auth.views.provider_identity', name='openid-provider-identity'),
         url(r'^openid/provider/xrds/$', 'external_auth.views.provider_xrds', name='openid-provider-xrds')
     )