Remove Disable HAProxy option from Quick Start Guide

The disable HAProxy option is not commonly used and not
recommended.  This patch moves the section that describes it
out of the Quick Start Guide and into the Advanced Configuration
Guide.

Change-Id: Iccd8a6369d772bd85f304cba0a99300180a369c8
Closes-Bug: #1569560

doc/advanced-configuration.rst

@@ -134,3 +134,17 @@ TODO(all) fill this section out
 OpenStack Service Configuration in Kolla
 ----------------------------------------
 TODO(all) fill this section out
+
+IP Address Constrained Environments
+-----------------------------------
+If a development environment doesn't have a free IP address available for VIP
+configuration, the host's IP address may be used here by disabling HAProxy by
+adding:
+
+::
+
+    enable_haproxy: "no"
+
+Note this method is not recommended and generally not tested by the
+Kolla community, but included since sometimes a free IP is not available
+in a testing environment.

doc/quickstart.rst

@@ -453,18 +453,6 @@ added to the "api\_interface" as specified in the globals.yml
 
     kolla_internal_vip_address: "10.10.10.254"
 
-If the environment doesn't have a free IP address available for VIP
-configuration, the host's IP address may be used here by disabling HAProxy by
-adding:
-
-::
-
-    enable_haproxy: "no"
-
-Note this method is not recommended and generally not tested by the
-Kolla community, but included since sometimes a free IP is not available
-in a testing environment.
-
 The "network\_interface" variable is the interface to which Kolla binds API
 services. For example, when starting up Mariadb it will bind to the
 IP on the interface list in the "network\_interface" variable.