Bug 1333092 - Fix flake8 E402: module level import not at top of file

treeherder/config/wsgi.py:17:1: E402 module level import not at top of file
treeherder/config/wsgi.py:18:1: E402 module level import not at top of file

setup.cfg

@@ -18,7 +18,7 @@ ignore = E121,E123,E125,E126,E129,E226,E24,E704,E501,F403
 max-line-length = 140
 
 [isort]
-skip = .git,__pycache__,.vagrant,node_modules,migrations,wsgi.py
+skip = .git,__pycache__,.vagrant,node_modules,migrations
 multi_line_output = 1
 force_grid_wrap = true
 line_length = 140

treeherder/config/wsgi.py

@@ -8,16 +8,15 @@ this application via the ``WSGI_APPLICATION`` setting.
 """
 import os
 
+from django.core.cache.backends.memcached import BaseMemcachedCache
+from django.core.wsgi import get_wsgi_application
+
 # We defer to a DJANGO_SETTINGS_MODULE already in the environment. This breaks
 # if running multiple sites in the same mod_wsgi process. To fix this, use
 # mod_wsgi daemon mode with each site in its own daemon process, or use
 # os.environ["DJANGO_SETTINGS_MODULE"] = "treeherder.config.settings"
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "treeherder.config.settings")
 
-from django.core.cache.backends.memcached import BaseMemcachedCache
-from django.core.wsgi import get_wsgi_application
-
-
 application = get_wsgi_application()
 
 # Fix django closing connection to MemCachier after every request: