Disable waiting forever for connpool workers

This will cause apache to no longer wait forever for a connection
pool member to become available before returning 503 to the client.
This may help us determine if some of the timeouts we see when
talking to the services come from an overloaded apache.

Change-Id: Ibc19fc9a53e2330f9aca45f5a10a59c576cb22e6
diff --git a/lib/apache b/lib/apache
index 76eae9c..cf7215b 100644
--- a/lib/apache
+++ b/lib/apache
@@ -290,7 +290,7 @@
         apache_conf=$(apache_site_config_for $name)
         iniset "$file" uwsgi socket "$socket"
         iniset "$file" uwsgi chmod-socket 666
-        echo "ProxyPass \"${url}\" \"unix:${socket}|uwsgi://uwsgi-uds-${name}\" retry=0 " | sudo tee -a $apache_conf
+        echo "ProxyPass \"${url}\" \"unix:${socket}|uwsgi://uwsgi-uds-${name}\" retry=0 acquire=1 " | sudo tee -a $apache_conf
         enable_apache_site $name
         restart_apache_server
     fi
@@ -351,7 +351,7 @@
     apache_conf=$(apache_site_config_for $name)
     echo "KeepAlive Off" | sudo tee $apache_conf
     echo "SetEnv proxy-sendchunked 1" | sudo tee -a $apache_conf
-    echo "ProxyPass \"${url}\" \"http://$APACHE_LOCAL_HOST:$port\" retry=0 " | sudo tee -a $apache_conf
+    echo "ProxyPass \"${url}\" \"http://$APACHE_LOCAL_HOST:$port\" retry=0 acquire=1 " | sudo tee -a $apache_conf
     enable_apache_site $name
     restart_apache_server
 }
@@ -370,7 +370,7 @@
 
     echo "KeepAlive Off" | sudo tee $apache_conf
     echo "SetEnv proxy-sendchunked 1" | sudo tee -a $apache_conf
-    echo "ProxyPass \"${loc}\" \"$url\" retry=0 " | sudo tee -a $apache_conf
+    echo "ProxyPass \"${loc}\" \"$url\" retry=0 acquire=1 " | sudo tee -a $apache_conf
     enable_apache_site $name
     restart_apache_server
 }