Move information from README to documentation

Change-Id: If329233dc23bd2bce96a3465696100fdf76747bd
Signed-off-by: Ivan Anfimov <lazekteam@gmail.com>

README.rst

@@ -2,8 +2,7 @@
 OpenStack-Ansible Trove
 =======================
 
-Ansible role that installs and configures OpenStack Trove. Trove is
-installed behind the Apache webserver listening on port 8779 by default.
+Ansible role that installs and configures OpenStack Trove.
 
 Documentation for the project can be found at:
 `<https://docs.openstack.org/openstack-ansible-os_trove/latest/>`_
@@ -19,28 +18,3 @@ The project home is at:
 
 The project bug tracker is located at:
 `<https://bugs.launchpad.net/openstack-ansible>`_
-
-Required Variables
-==================
-
-This list is not exhaustive at present. See role internals for further
-details.
-
-.. code-block:: yaml
-
-    # trove TCP listening port
-    trove_service_port: 8779
-
-Example Playbook
-================
-
-.. code-block:: yaml
-
-   - name: Install trove service
-     hosts: trove_all
-     user: root
-     roles:
-        - { role: "os_trove", tags: [ "os-trove" ] }
-     vars:
-       is_metal: "{{ properties.is_metal|default(false) }}"
-

doc/source/index.rst

@@ -5,7 +5,7 @@ OpenStack-Ansible Trove
 This Ansible role installs Trove.
 
 To clone or view the source code for this repository, visit the role repository
-for `os_trove <https://github.com/openstack/openstack-ansible-os_trove>`_.
+for `os_trove <https://opendev.org/openstack/openstack-ansible-os_trove>`_.
 
 .. toctree::
    :maxdepth: 2
@@ -22,12 +22,13 @@ Default variables
 Dependencies
 ~~~~~~~~~~~~
 
-This role needs pip >= 7.1 installed on the target host.
-
 To use this role, define the following variables:
 
 .. code-block:: yaml
 
+    # trove TCP listening port
+    trove_service_port: 8779
+
     # Service and user passwords
     trove_galera_password:
     trove_rabbitmq_password: