Port in redirect

[aledbf]

fixes #127
fixes kubernetes-retired/contrib#2293

[k8s-reviewable]

This change is 

[aledbf]

+++ /tmp/b177101617	2017-01-21 17:10:04.000000000 +0000
@@ -56282,7 +56282,7 @@
         vhost_traffic_status_filter_by_set_key $geoip_country_code country::$server_name;

         location / {
-            port_in_redirect off;
+            port_in_redirect on;
             client_max_body_size                    "1m";

             proxy_set_header Host                   $host;

[coveralls]

Coverage decreased (-0.04%) to 42.961% when pulling 3df139c on aledbf:port-in-redirect into 728c1c9 on kubernetes:master.