Improve README file

* add missing infrastructure component images
* sync missing statement with projects.yaml file (governance repo)
* improve syntax

Change-Id: Ie1716e7482c11b9de243b6ee04d04f1039dcf784

README.rst

@@ -1,17 +1,20 @@
+==============
 Kolla Overview
 ==============
 
 The Kolla project is a member of the OpenStack `Big Tent
 Governance <http://governance.openstack.org/reference/projects/index.html>`__.
+
 Kolla's mission statement is:
 
 ::
 
-    Kolla provides production-ready containers and deployment tools for
+    To provide production-ready containers and deployment tools for operating
-    operating OpenStack clouds.
+    OpenStack clouds.
 
 Kolla provides `Docker <http://docker.com/>`__ containers and
 `Ansible <http://ansible.com/>`__ playbooks to meet Kolla's mission.
+
 Kolla is highly opinionated out of the box, but allows for complete
 customization. This permits operators with little experience to deploy
 OpenStack quickly and as experience grows modify the OpenStack
@@ -26,6 +29,25 @@ Learn about Kolla by reading the documentation online
 Get started by reading the `Developer
 Quickstart <http://docs.openstack.org/developer/kolla/quickstart.html>`__.
 
+Docker images
+=============
+
+The `Docker images <https://docs.docker.com/userguide/dockerimages/>`__
+are built by the Kolla project maintainers. A detailed process for
+contributing to the images can be found in the `image building
+guide <http://docs.openstack.org/developer/kolla/image-building.html>`__.
+
+The Kolla developers build images in the `kolla` namespace for every tagged
+release and implement an Ansible roles for many but not all of them.
+
+You can view the available images on `Docker Hub
+<https://hub.docker.com/u/kolla/>`__ or with the Docker CLI::
+
+    $ sudo docker search kolla
+
+OpenStack services
+------------------
+
 Kolla provides images to deploy the following OpenStack projects:
 
 - `Aodh <http://docs.openstack.org/developer/aodh/>`__
@@ -57,55 +79,48 @@ Kolla provides images to deploy the following OpenStack projects:
 - `Watcher <http://docs.openstack.org/developer/watcher/>`__
 - `Zaqar <http://docs.openstack.org/developer/zaqar/>`__
 
-As well as these infrastructure components:
+Infrastructure components
+-------------------------
+
+Kolla provides images to deploy the following infrastructure components:
 
 - `Ceph <http://ceph.com/>`__ implementation for Cinder, Glance and Nova
-- `Openvswitch <http://openvswitch.org/>`__ and Linuxbridge backends for Neutron
+- `collectd <https://collectd.org>`__,
-- `MongoDB <https://www.mongodb.org/>`__ as a database backend for Ceilometer
+  `InfluxDB <https://influxdata.com/time-series-platform/influxdb/>`__, and
-  and Gnocchi
+  `Grafana <http://grafana.org>`__ for performance monitoring.
-- `RabbitMQ <https://www.rabbitmq.com/>`__ as a messaging backend for
+- `Elasticsearch <https://www.elastic.co/de/products/elasticsearch>`__ and
-  communication between services.
+   `Kibana <https://www.elastic.co/de/products/kibana>`__ to search, analyze,
+   and visualize log messages.
 - `HAProxy <http://www.haproxy.org/>`__ and
   `Keepalived <http://www.keepalived.org/>`__ for high availability of services
   and their endpoints.
-- `MariaDB and Galera <https://mariadb.com/kb/en/mariadb/galera-cluster/>`__ for
-  highly available MySQL databases
 - `Heka <http://hekad.readthedocs.org/>`__ A distributed and
-  scalable logging system for openstack services.
+  scalable logging system for OpenStack services.
-
+- `MariaDB and Galera Cluster <https://mariadb.com/kb/en/mariadb/galera-cluster/>`__
-Docker Images
+  for highly available MySQL databases
-=============
+- `MongoDB <https://www.mongodb.org/>`__ as a database backend for Ceilometer
-
+  and Gnocchi
-The `Docker images <https://docs.docker.com/userguide/dockerimages/>`__
+- `Open vSwitch <http://openvswitch.org/>`__ and Linuxbridge backends for Neutron
-are built by the Kolla project maintainers. A detailed process for
+- `RabbitMQ <https://www.rabbitmq.com/>`__ as a messaging backend for
-contributing to the images can be found in the `image building
+  communication between services.
-guide <http://docs.openstack.org/developer/kolla/image-building.html>`__.
-
-The Kolla developers build images in the `kolla` namespace for every tagged
-release and implement an Ansible deployment for many but not all of them.
-
-You can view the available images on `Docker Hub
-<https://hub.docker.com/u/kolla/>`__ or with the Docker CLI::
-
-    $ sudo docker search kolla
 
 Directories
 ===========
 
--  ansible - Contains Ansible playbooks to deploy Kolla in Docker
+-  ``ansible`` - Contains Ansible playbooks to deploy Kolla in Docker
    containers.
--  demos - Contains a few demos to use with Kolla.
+-  ``demos`` - Contains a few demos to use with Kolla.
--  dev/vagrant - Contains a vagrant VirtualBox/Libvirt based development
+-  ``dev/vagrant`` - Contains a vagrant VirtualBox/Libvirt based development
    environment.
--  doc - Contains documentation.
+-  ``doc`` - Contains documentation.
--  etc - Contains a reference etc directory structure which requires
+-  ``docker`` - Contains jinja2 templates for the docker build system.
+-  ``etc`` - Contains a reference etc directory structure which requires
    configuration of a small number of configuration variables to achieve
    a working All-in-One (AIO) deployment.
--  docker - Contains jinja2 templates for the docker build system.
+-  ``tests`` - Contains functional testing tools.
--  tools - Contains tools for interacting with Kolla.
+-  ``tools`` - Contains tools for interacting with Kolla.
--  specs - Contains the Kolla communities key arguments about
+-  ``specs`` - Contains the Kolla communities key arguments about
    architectural shifts in the code base.
--  tests - Contains functional testing tools.
 
 Getting Involved
 ================