Install all dashboard/panel files from murano-dashboard

Previously murano only had _50_murano.py dashboard file. This is about
to change, to allow more granular configuration of murano and
app-catalog panels/dashboards. This commit prepares devstack to
accommodate upcoming change.
This commit also rewrites install section of murano-dashboard, to group
all copy commands under the same code block while also grouping pre/post
Newton installation instructions and removing some of the redundant code
(some of the local settings are already present in _50_murano.py in
Newton)

Targets bp: catalog-dashboard-reorg

Change-Id: I6d1d8c99aecf10567608d0c96de69a5309e706e3

devstack/plugin.sh

@@ -501,10 +501,10 @@ function configure_local_settings_py() {
     fi
 
     # Install Murano as plugin for Horizon
-    ln -sf $MURANO_DASHBOARD_DIR/muranodashboard/local/enabled/_50_murano.py $HORIZON_DIR/openstack_dashboard/local/enabled/
+    ln -sf $MURANO_DASHBOARD_DIR/muranodashboard/local/enabled/*.py $HORIZON_DIR/openstack_dashboard/local/enabled/
 
     # Install setting to Horizon
-    ln -sf $MURANO_DASHBOARD_DIR/muranodashboard/local/local_settings.d/_50_murano.py $HORIZON_DIR/openstack_dashboard/local/local_settings.d/
+    ln -sf $MURANO_DASHBOARD_DIR/muranodashboard/local/local_settings.d/*.py $HORIZON_DIR/openstack_dashboard/local/local_settings.d/
 
     # Install murano RBAC policy to Horizon
     ln -sf $MURANO_DASHBOARD_DIR/muranodashboard/conf/murano_policy.json $HORIZON_DIR/openstack_dashboard/conf/

doc/source/draft/admin-guide/deploy_murano/install_manually.rst

@@ -248,24 +248,6 @@ This section describes how to install and run the murano dashboard.
         cd horizon
         tox -e venv -- pip install -e ../murano-dashboard
 
-#.  Enable the murano panel in the OpenStack Dashboard by copying
-    the ``muranodashboard`` plug-in file to
-    the ``openstack_dashboard/local/enabled/`` directory:
-
-    * For the OpenStack installations prior to the Newton release, run:
-
-      .. code-block:: console
-
-         cp ../murano-dashboard/muranodashboard/local/_50_murano.py \
-         openstack_dashboard/local/enabled/
-
-    * For the Newton (and later) OpenStack installations, run:
-
-      .. code-block:: console
-
-         cp ../murano-dashboard/muranodashboard/local/enabled/_50_murano.py \
-         openstack_dashboard/local/enabled/
-
 #.  Prepare local settings.
 
     .. code-block:: console
@@ -276,37 +258,44 @@ This section describes how to install and run the murano dashboard.
      For more information, check out the official
      `horizon documentation <http://docs.openstack.org/developer/horizon/topics/settings.html#openstack-settings-partial>`_.
 
-#.  Customize local settings according to your OpenStack installation:
+#.  Enable and configure Murano dashboard in the OpenStack Dashboard:
 
-    .. code-block:: ini
+    * For the Newton (and later) OpenStack installations, copy plug-in file
+      local settings files, and policy files:
+
+      .. code-block:: console
+
+         cp ../murano-dashboard/muranodashboard/local/enabled/*.py \
+         openstack_dashboard/local/enabled/
+
+         cp ../murano-dashboard/muranodashboard/local/local_settings.d/*.py \
+         openstack_dashboard/local/local_settings.d/
+
+         cp ../murano-dashboard/muranodashboard/conf/* openstack_dashboard/conf/
+
+    * For the OpenStack installations prior to the Newton release, run:
+
+      .. code-block:: console
+
+         cp ../murano-dashboard/muranodashboard/local/_50_murano.py \
+         openstack_dashboard/local/enabled/
+
+      Customize local settings of your horizon installation, by editing the
+      ``openstack_dashboard/local/local_settings.py`` file:
+
+      .. code-block:: python
 
          ...
          ALLOWED_HOSTS = '*'
 
-        # Provide OpenStack Lab credentials
+         # Provide your OpenStack Lab credentials
          OPENSTACK_HOST = '%OPENSTACK_HOST_IP%'
 
          ...
 
-        # Set secret key to prevent it's generation
-        SECRET_KEY = 'random_string'
-
-        ...
-
          DEBUG_PROPAGATE_EXCEPTIONS = DEBUG
 
-#. For the OpenStack installations of the Newton (and later) version,
+      Change the default session back end from browser cookies to database
-   copy murano dashboard specific settings and policy files
-   to horizon dashboard:
-
-    .. code-block:: console
-
-       cp ../murano-dashboard/muranodashboard/local/local_settings.d/_50_murano.py \
-       openstack_dashboard/local/local_settings.d/
-
-       cp ../murano-dashboard/conf/* openstack_dashboard/conf/
-
-#. Change the default session back end from browser cookies to database
       to avoid issues with forms during the applications creation:
 
       .. code-block:: python
@@ -320,6 +309,7 @@ This section describes how to install and run the murano dashboard.
 
          SESSION_ENGINE = 'django.contrib.sessions.backends.db'
 
+
 #. (Optional) If you do not plan to get the murano service from the keystone
    application catalog, specify where the ``murano-api`` service is running:
 
@@ -327,8 +317,9 @@ This section describes how to install and run the murano dashboard.
 
        MURANO_API_URL = 'http://localhost:8082'
 
-#. (Optional) If you have set up the database as a session back end,
+#. (Optional) If you have set up the database as a session back end (this is
-   perform the database synchronization:
+   done by default with murano local_settings file starting with Newton),
+   perform database migration:
 
    .. code-block:: console
 
@@ -348,7 +339,7 @@ This section describes how to install and run the murano dashboard.
 
        The development server restarts automatically on every code change.
 
-**Result:** The murano dashboard is available at ``http://localhost:8000``.
+**Result:** The murano dashboard is available at ``http://IP:PORT``.
 
 Import murano applications
 ~~~~~~~~~~~~~~~~~~~~~~~~~~