Fix the localrc issue

1.Since the local.conf need to live on devstack directory
Refine the cat command to be obvious

2.Also fix one issue, as devstack would use localrc directly
if localrc file exists, but localrc not have enable_plugin
setting. This would cause devstack install without magnum enable.
So we use local.conf as the default configuration kick point to
make magnum can be installed with devstack

Closes-Bug: #1441977
Change-Id: Ib06cd38ed9744d42e664ff92d486c29e7932851f

devstack/README.rst

@@ -11,11 +11,12 @@ needs to download an atomic fedora 21 qcow image. If you already have this image
 you can copy it to /opt/stack/devstack/files/fedora-21-atomic.qcow2 to save you
 this time.
 
-To install magnum into devstack, Add this repo as an external repository: ::
+To install magnum into devstack, add the following settings to enable magnum plugin: ::
 
-     > cat local.conf
+     cat > /opt/stack/devstack/local.conf << END
      [[local|localrc]]
-     enable_plugin magnum https://github.com/openstack/magnum
+     enable_plugin magnum https://github.com/openstack/magnum master
+     END
 
 Run devstack as normal: ::
 

devstack/settings

@@ -31,7 +31,6 @@ enable_service h-api-cfn
 enable_service h-api-cw
 
 # Enable Magnum services
-enable_service magnum
 enable_service m-api
 enable_service m-cond
 

doc/source/dev/dev-quickstart.rst

@@ -120,21 +120,25 @@ Clone DevStack::
     sudo chown $USER /opt/stack
 
     git clone https://github.com/openstack-dev/devstack.git /opt/stack/devstack
-    git clone https://github.com/openstack/magnum /opt/stack/magnum
 
 Copy devstack/localrc with minimal settings required to enable Heat
 and Neutron, refer to http://docs.openstack.org/developer/devstack/guides/neutron.html
 for more detailed neutron configuration.
 
-Be sure to update network and other config as appropriate for your setup.::
+To install magnum into devstack, add following settings to local.conf. You need to
+make customized setting according to your environment requirement, refer devstack
+guide for details.::
 
-    cp /opt/stack/magnum/devstack/settings /opt/stack/devstack/localrc
-
-To install magnum into devstack, Add this repo as an external repository: ::
-
-     > cat local.conf
+     cat > /opt/stack/devstack/local.conf << END
      [[local|localrc]]
      enable_plugin magnum https://github.com/openstack/magnum
+     DATABASE_PASSWORD=password
+     RABBIT_PASSWORD=password
+     SERVICE_TOKEN=password
+     SERVICE_PASSWORD=password
+     ADMIN_PASSWORD=password
+     PUBLIC_INTERFACE=eth1
+     END
 
 Run DevStack::