Replace multi-role checks with action plugin

This approach should make it easier to add new checks without having to
write lots of YAML and doing things against Ansible (e.g.
ignore_errors).

A single action plugin determines what checks to run per each host,
including arguments to the check. A check is implemented as a class with
a run method, with the same signature as an action plugin and module,
and is normally backed by a regular Ansible module.

Each check is implemented as a separate Python file. This allows whoever
adds a new check to focus solely in a single Python module, and
potentially an Ansible module within library/ too.

All checks are automatically loaded, and only active checks that are
requested by the playbook get executed.

1 files changed, 0 insertions, 52 deletions

diff --git a/roles/openshift_preflight/README.md b/roles/openshift_preflight/README.md
deleted file mode 100644
index b6d3542d3..000000000
--- a/roles/openshift_preflight/README.md
+++ /dev/null
@@ -1,52 +0,0 @@
-OpenShift Preflight Checks
-==========================
-
-This role detects common problems prior to installing OpenShift.
-
-Requirements
-------------
-
-* Ansible 2.2+
-
-Role Variables
---------------
-
-None
-
-Dependencies
-------------
-
-None
-
-Example Playbook
-----------------
-
-```yaml
----
-- hosts: OSEv3
-  roles:
-    - openshift_preflight/init
-
-- hosts: OSEv3
-  name: checks that apply to all hosts
-  gather_facts: no
-  ignore_errors: yes
-  roles:
-    - openshift_preflight/common
-
-- hosts: OSEv3
-  name: verify check results
-  gather_facts: no
-  roles:
-    - openshift_preflight/verify_status
-```
-
-License
--------
-
-Apache License Version 2.0
-
-Author Information
-------------------
-
-Customer Success team (dev@lists.openshift.redhat.com)