[Docs] Migrate CLI reference to reference guide

The CLI usage shouldn't probably be directly given into guides,
but should instead be moved into reference.

Change-Id: I7085591f147d7dc0ff2c63be3380a06e6387e6b9
(cherry picked from commit 4db3962281)

doc/source/admin/index.rst

@@ -22,4 +22,3 @@ adding images, booting instances, and attaching volumes.
    monitor-environment.rst
    troubleshooting.rst
    advanced-config.rst
-   ref-info.rst

doc/source/admin/ref-info.rst

@@ -1,61 +0,0 @@
-=====================
-Reference information
-=====================
-
-This is a draft reference information page for the proposed OpenStack-Ansible
-operations guide.
-
-Linux Container commands
-~~~~~~~~~~~~~~~~~~~~~~~~
-
-The following are some useful commands to manage LXC:
-
--  List containers and summary information such as operational state and
-   network configuration:
-
-   .. code-block:: shell-session
-
-       # lxc-ls --fancy
-
--  Show container details including operational state, resource
-   utilization, and ``veth`` pairs:
-
-   .. code-block:: shell-session
-
-       # lxc-info --name container_name
-
--  Start a container:
-
-   .. code-block:: shell-session
-
-       # lxc-start --name container_name
-
--  Attach to a container:
-
-   .. code-block:: shell-session
-
-       # lxc-attach --name container_name
-
--  Stop a container:
-
-   .. code-block:: shell-session
-
-       # lxc-stop --name container_name
-
-Finding Ansible scripts after installation
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-All scripts used to install OpenStack with Ansible can be viewed from
-the repository on GitHub, and on the deployment host.
-
-The repository containing the scripts and playbooks is located at
-https://github.com/openstack/openstack-ansible.
-
-To access the scripts and playbooks on your deployment host,
-follow these steps.
-
-#. Log into your deployment host.
-
-#. Change to the ``/opt/openstack-ansible`` directory.
-
-#. The ``scripts`` directory contains scripts used in the installation.

doc/source/admin/ref-info/ansible-scripts.rst

@@ -1,21 +0,0 @@
-==========================================
-Finding Ansible scripts after installation
-==========================================
-
-All scripts used to install OpenStack with Ansible can be viewed from
-the repository on GitHub, and on the local infrastructure server.
-
-The repository containing the scripts and playbooks is located at
-https://github.com/openstack/openstack-ansible.
-
-To access the scripts and playbooks on the local ``infra01`` server,
-follow these steps.
-
-#. Log into the ``infra01`` server.
-
-#. Change to the ``/opt/rpc-openstack/openstack-ansible`` directory.
-
-#. The ``scripts`` directory contains scripts used in the installation.
-   Generally, directories and subdirectories under ``rpcd``
-   contain files related to RPCO. For example, the
-   ``rpcd/playbooks`` directory contains the RPCO playbooks.

doc/source/reference/commands/reference.rst

@@ -1,4 +1,7 @@
-========================
+======================
+Command Line Reference
+======================
+
 Linux Container commands
 ========================
 
@@ -35,3 +38,7 @@ The following are some useful commands to manage LXC:
    .. code-block:: shell-session
 
        # lxc-stop --name container_name
+
+Systemd nspawn commands
+=======================
+

doc/source/reference/conventions.rst

@@ -0,0 +1,46 @@
+===========
+Conventions
+===========
+
+To avoid extra configuration, a series of conventions are set into code.
+
+Default folders locations
+=========================
+
+Ansible roles
+~~~~~~~~~~~~~
+
+The ansible roles are stored under ``/etc/ansible/roles``.
+
+OpenStack-Ansible directory checkout
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The code is generally located into ``/opt/openstack-ansible``.
+
+OpenStack-Ansible wrapper
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Our ``openstack-ansible`` cli is located in ``/usr/bin/openstack-ansible``.
+It sources an environment variable file located in:
+``/usr/bin/openstack-ansible.rc``.
+
+Userspace configurations
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+All the userspace configurations are expected to be in
+``/etc/openstack_deploy/``.
+
+Ansible configuration
+=====================
+
+Ansible.cfg
+~~~~~~~~~~~
+
+There is no ``ansible.cfg`` provided with OpenStack-Ansible.
+Environment variables are used to alter the default
+Ansible behavior if necessary.
+
+Inventory conventions
+~~~~~~~~~~~~~~~~~~~~~
+
+Please confer to the inventory section of this reference.

doc/source/reference/index.rst

@@ -8,5 +8,7 @@ to deploy, configure, or upgrade an OpenStack-Ansible cloud.
 .. toctree::
    :maxdepth: 1
 
+   conventions.rst
    inventory/inventory.rst
+   commands/reference.rst
    upgrades/reference.rst