Switch local http uwsgi conf to http-socket mode

Previously the local uwsgi server mode was using uwsgi in http mode.
This was unessecary and actually not recommend by the uwsgi docs [1][2]
This is because http mode starts a frontend http process that forwards
requests to the workers running the python code. This is done for the
largely the same reasons we're using apache as a proxy and is
unnecessary. http-socket mode doesn't do this and just exposes the
workers as an http interface to the proxy. (in our case apache)

[1] http://uwsgi-docs.readthedocs.io/en/latest/HTTP.html#http-sockets
[2] http://uwsgi-docs.readthedocs.io/en/latest/ThingsToKnow.html

Change-Id: I5671687c8083fa4bdee066c07b083a0f00be532b

lib/apache

@@ -301,7 +301,7 @@ function write_local_uwsgi_http_config {
     rm -rf $file
     iniset "$file" uwsgi wsgi-file "$wsgi"
     port=$(get_random_port)
-    iniset "$file" uwsgi http "127.0.0.1:$port"
+    iniset "$file" uwsgi http-socket "127.0.0.1:$port"
     iniset "$file" uwsgi processes $API_WORKERS
     # This is running standalone
     iniset "$file" uwsgi master true