Update dependencies for optional functions (#116)

* Update dependencies for optional functions
* Update README, galaxy.yml, and requirements.yml for optional dependencies

Signed-off-by: Webster Mudge <wmudge@cloudera.com>

README.md

@@ -1,11 +1,29 @@
-# Ansible Collection for Cloudera Private Cloud
+# Ansible Collection for Cloudera (CDP) Private Cloud
 
 ## Requirements
 
 - Python 2.x or 3.x
 - [Ansible](http://docs.ansible.com/ansible/intro_installation.html)
 - [JMESPath](https://jmespath.org/)
 
+### Dependencies
+
+| Name | Type | Version |
+| `ansible.posix` | collection | `1.3.0` |
+| `community.crypto` | collection | `2.2.1` |
+| `community.general` | collection | `4.5.0` |
+
+### Optional Dependencies
+
+| Name | Type | Version |
+| `community.mysql` | collection | `3.1.0` |
+| `community.postgresql` | collection | `1.6.1` |
+| `freeipa.ansible_freeipa` | collection | `1.6.2` |
+| `geerlingguy.postgresql` | role | `2.2.0` |
+| `geerlingguy.mysql` (patched) | role | `master` |
+
+All dependencies, required and optional, are found in `requirements.yml`. Only the required dependencies are in `galaxy.yml` and thus installed by `ansible-builder` when creating an Environment Execution container.
+
 **Do not use Ansible 2.9.0**. This version has an [issue with templating](https://github.com/ansible/ansible/issues/64745) which causes the playbook execution to fail. Instead, use any 2.8.x version or a later 2.9.x version as these are not affected.
 
 ## Usage

galaxy.yml

@@ -1,3 +1,5 @@
+---
+
 # Copyright 2023 Cloudera, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,7 +16,7 @@
 
 namespace: cloudera
 name: cluster
-version: 3.4.2
+version: 4.0.0-rc1
 
 authors: []
 readme: README.md
@@ -26,9 +28,6 @@ dependencies:
   'ansible.posix': '1.3.0'
   'community.crypto': '2.2.1'
   'community.general': '4.5.0'
-  'community.mysql': '3.1.0'
-  'community.postgresql': '1.6.1'
-  'freeipa.ansible_freeipa': '1.6.2'
 
 repository: https://github.com/cloudera-labs/cloudera.cluster
 documentation: https://github.com/cloudera-labs/cloudera.cluster

requirements.yml

@@ -1,4 +1,6 @@
-# Copyright 2021 Cloudera, Inc.
+---
+
+# Copyright 2023 Cloudera, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,8 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
----
-
 roles:
   - name: geerlingguy.postgresql
     version: 2.2.0