List standard deployment tools capabilities

To improve the "deployment tools" section of the OpenStack website
and provide more information for deployers to choose between the various
methods of installing OpenStack, we plan to introduce specific
capabilities tags. Those will facilitate searching, but should not
replace a proper long description.

This commit introduces a taxonomy of basic tags. More can be added
later, this focuses on basic capabilities and technology description.

Once approved, we will ask the various deployment tools teams to
reference those tags directly in the deployment_tools.yaml file.

Change-Id: I34473453851d0cc4999a258a6567aa2837c1bb19

deployment_tools_capabilities.yaml

@@ -0,0 +1,187 @@
+---
+capabilities:
+
+  - category: starts-from
+    description: >
+      What needs to happen before the deployment tool takes over.
+    tags:
+      - name: bare-metal
+        desc: Starts from scratch
+
+      - name: os-installed
+        desc: Needs a base operating system
+
+      - name: env-bootstrap
+        desc: Needs basic environment bootstrap (e.g. Docker, Puppet agent...)
+
+      - name: kubernetes-cluster
+        desc: Needs a full Kubernetes cluster available
+
+  - category: technology
+    description: >
+      What base technologies the deployment tool is using.
+    tags:
+      # Packaging technologies
+      - name: deb-packages
+        desc: Makes use of Debian-style packaging
+
+      - name: rpm-packages
+        desc: Makes use of RPM-style packaging
+
+      - name: oci-containers
+        desc: Makes use of OCI containers
+
+      - name: source-tarballs
+        desc: Works directly from upstream-released source code tarballs
+
+      - name: git
+        desc: Works directly from git source code repositories
+
+      # Base distribution
+      - name: redhat-centos
+        desc: Based on RedHat Enterprise Linux or CentOS
+
+      - name: fedora
+        desc: Based on Fedora
+
+      - name: sles-opensuse
+        desc: Based on SUSE Linux Enterprise Server or OpenSUSE
+
+      - name: debian
+        desc: Based on Debian GNU/Linux
+
+      - name: ubuntu
+        desc: Based on Ubuntu Server
+
+      - name: oraclelinux
+        desc: Based on Oracle Linux
+
+      # Configuration management and orchestration technologies
+
+      - name: puppet
+        desc: Makes use of Puppet configuration management
+
+      - name: chef
+        desc: Makes use of Chef configuration management
+
+      - name: ansible
+        desc: Relies on Ansible for configuration management
+
+      - name: juju
+        desc: Makes use of Juju for orchestration
+
+      - name: helm
+        desc: Relies on Helm charts for deployment
+
+      - name: kubernetes
+        desc: Makes use of Kubernetes for orchestration
+
+      - name: heat
+        desc: Uses OpenStack Heat for orchestration
+
+  - category: components
+    description: >
+      Components of OpenStack supported by the deployment tool (latest version)
+    tags:
+      # Additional services
+      - name: rabbitmq
+        desc: Deploys RabbitMQ
+
+      - name: ceph
+        desc: Deploys Ceph for block storage
+
+      - name: etcd
+        desc: Deploys etcd to enable advanced coordination capabilities
+
+      - name: memcached
+        desc: Deploys memcached for Keystone
+
+      - name: mysql
+        desc: Deploys MySQL database
+
+      - name: vault
+        desc: Deploys Hashicorp Vault for Barbican secrets storage
+
+      # OpenStack services
+      - name: keystone
+      - name: placement
+      - name: glance
+      - name: barbican
+      - name: searchlight
+      - name: karbor
+      - name: neutron
+      - name: octavia
+      - name: designate
+      - name: ironic
+      - name: cyborg
+      - name: swift
+      - name: cinder
+      - name: manila
+      - name: nova
+      - name: zun
+      - name: qinling
+      - name: magnum
+      - name: trove
+      - name: sahara
+      - name: murano
+      - name: freezer
+      - name: solum
+      - name: masakari
+      - name: heat
+      - name: mistral
+      - name: senlin
+      - name: zaqar
+      - name: aodh
+      - name: blazar
+      - name: horizon
+      - name: ec2api
+      - name: ceilometer
+      - name: monasca
+      - name: panko
+      - name: watcher
+      - name: vitrage
+      - name: congress
+      - name: rally
+      - name: cloudkitty
+      - name: tricircle
+
+  - category: upgrade
+    description: >
+      What is the main supported (tested) upgrade path when using this
+      deployment tool.
+    tags:
+      # Control plane downtime
+      - name: offline
+        desc: Upgrade is done offline, control plane is down during upgrade.
+
+      - name: online
+        desc: Upgrade is done online, control plane is up during upgrade.
+
+      # Upgrade methodology
+      - name: per-version
+        desc: Need to bring each new version online before upgrading the next
+
+      - name: fast-forward
+        desc: Each upgrade is done separately but no need to bring it online
+
+      - name: skip-level
+        desc: Direct x to z version upgrade, no need for intermediary steps
+
+  - category: features
+    description: >
+      Specific features of the deployment tools
+    tags:
+      - name: offline-installation
+        desc: No need for an Internet connection during installation or upgrade
+
+      - name: supports-heterogeneous-versions
+        desc: Supports running heterogeneous versions of OpenStack components
+
+      - name: encrypted-local-comms
+        desc: Management plane uses encrypted communications between components
+
+      - name: all-in-one
+        desc: Supports installing all components on a single machine
+
+      - name: cells
+        desc: Supports deploying multiple cells