Replace deprecated django.conf.urls.url()

This method is deprecated in Django 3.1[1], in favor of
django.urls.re_path(), and triggers the following warning.

RemovedInDjango40Warning: django.conf.urls.url() is deprecated in favor
of django.urls.re_path().

This was already fixed in Horizon by [2].

[1] https://docs.djangoproject.com/en/4.0/releases/3.1/#id2
[2] d9266fd82c1f0acc6b7236a6dc9b7e510985eb13

Change-Id: Ib921e98f220efb697e42673ca43da36cc151e7c7

heat_dashboard/content/resource_types/urls.py

@@ -11,12 +11,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from django.conf.urls import url
+from django.urls import re_path
 
 from heat_dashboard.content.resource_types import views
 
 urlpatterns = [
-    url(r'^$', views.ResourceTypesView.as_view(), name='index'),
-    url(r'^(?P<resource_type>[^/]+)/$',
+    re_path(r'^$', views.ResourceTypesView.as_view(), name='index'),
+    re_path(r'^(?P<resource_type>[^/]+)/$',
             views.DetailView.as_view(), name='details'),
 ]

heat_dashboard/content/stacks/urls.py

@@ -10,29 +10,29 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from django.conf.urls import url
+from django.urls import re_path
 
 from heat_dashboard.content.stacks import views
 
 urlpatterns = [
-    url(r'^$', views.IndexView.as_view(), name='index'),
-    url(r'^select_template$',
+    re_path(r'^$', views.IndexView.as_view(), name='index'),
+    re_path(r'^select_template$',
             views.SelectTemplateView.as_view(),
             name='select_template'),
-    url(r'^launch$', views.CreateStackView.as_view(), name='launch'),
-    url(r'^preview_template$',
+    re_path(r'^launch$', views.CreateStackView.as_view(), name='launch'),
+    re_path(r'^preview_template$',
             views.PreviewTemplateView.as_view(), name='preview_template'),
-    url(r'^preview$', views.PreviewStackView.as_view(), name='preview'),
-    url(r'^preview_details$',
+    re_path(r'^preview$', views.PreviewStackView.as_view(), name='preview'),
+    re_path(r'^preview_details$',
             views.PreviewStackDetailsView.as_view(), name='preview_details'),
-    url(r'^stack/(?P<stack_id>[^/]+)/$',
+    re_path(r'^stack/(?P<stack_id>[^/]+)/$',
             views.DetailView.as_view(), name='detail'),
-    url(r'^(?P<stack_id>[^/]+)/change_template$',
+    re_path(r'^(?P<stack_id>[^/]+)/change_template$',
             views.ChangeTemplateView.as_view(), name='change_template'),
-    url(r'^(?P<stack_id>[^/]+)/edit_stack$',
+    re_path(r'^(?P<stack_id>[^/]+)/edit_stack$',
             views.EditStackView.as_view(), name='edit_stack'),
-    url(r'^stack/(?P<stack_id>[^/]+)/(?P<resource_name>[^/]+)/$',
+    re_path(r'^stack/(?P<stack_id>[^/]+)/(?P<resource_name>[^/]+)/$',
             views.ResourceView.as_view(), name='resource'),
-    url(r'^get_d3_data/(?P<stack_id>[^/]+)/$',
+    re_path(r'^get_d3_data/(?P<stack_id>[^/]+)/$',
             views.JSONView.as_view(), name='d3_data'),
 ]

heat_dashboard/content/template_generator/urls.py

@@ -10,12 +10,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from django.conf.urls import url
+from django.urls import re_path
 
 from heat_dashboard.content.template_generator import views
 
 urlpatterns = [
-    url(r'^$', views.IndexView.as_view(), name='index'),
-    url(r'^get_resource_options$',
+    re_path(r'^$', views.IndexView.as_view(), name='index'),
+    re_path(r'^get_resource_options$',
             views.OptionView.as_view(), name="apis"),
 ]

heat_dashboard/content/template_versions/urls.py

@@ -11,13 +11,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from django.conf.urls import url
+from django.urls import re_path
 
 from heat_dashboard.content.template_versions import views
 
 
 urlpatterns = [
-    url(r'^$', views.TemplateVersionsView.as_view(), name='index'),
-    url(r'^(?P<template_version>[^/]+)/$',
+    re_path(r'^$', views.TemplateVersionsView.as_view(), name='index'),
+    re_path(r'^(?P<template_version>[^/]+)/$',
             views.DetailView.as_view(), name='details'),
 ]