Few fixes in steps for running pods-in-vm

Binding section parameters are missing in steps. Also localrc
files are being improved by including MULTI_HOST variable.

Change-Id: I857cab7e6d5d526811cbccfd7ecf77f3f720bcc0
Partially-Implements: blueprint binding-drivers-porting

README.rst

@@ -90,6 +90,12 @@ How to try out nested-pods locally:
        [kubernetes]
        pod_vif_driver = nested-vlan
 
+    - Configure binding section::
+
+       [binding]
+       driver = kuryr.lib.binding.drivers.vlan
+       link_iface = <VM interface name eg. eth0>
+
     - Restart kuryr-k8s-controller from within devstack screen.
 
 Now launch pods using kubectl, Undercloud Neutron will serve the networking.

devstack/local.conf.pod-in-vm.overcloud.sample

@@ -16,8 +16,11 @@ SERVICE_TOKEN=pass
 IDENTITY_API_VERSION=3
 ENABLED_SERVICES=""
 
-enable_service key
-enable_service mysql
+SERVICE_HOST=UNDERCLOUD_CONTROLLER_IP
+MULTI_HOST=1
+KEYSTONE_SERVICE_HOST=$SERVICE_HOST
+MYSQL_HOST=$SERVICE_HOST
+RABBIT_HOST=$SERVICE_HOST
 
 enable_service docker
 enable_service etcd

devstack/local.conf.pod-in-vm.undercloud.sample

@@ -11,6 +11,8 @@ LOG_COLOR=False
 # If you want the screen tabs logged in a specific location, you can use:
 # SCREEN_LOGDIR="${HOME}/devstack_logs"
 
+MULTI_HOST=1
+
 # Credentials
 ADMIN_PASSWORD=pass
 DATABASE_PASSWORD=pass