Remove 'CapacityBytes' from list of required parameters (#8956)

* Remove 'CapacityBytes' from list of required parameters

* Add CHANGELOG fragment

* Fix sanity test failure whitespace before ']'

* Update changelogs/fragments/8956-remove-capacitybytes-from-the-required-parameters_list.yml

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

* Add  description for the volume_details key CapacityBytes

* Update plugins/modules/redfish_config.py

Co-authored-by: Mike Raineri <mraineri@gmail.com>

* Adjust description.

---------

Co-authored-by: Pierre-yves FONTANIERE <pyf@cc.in2p3.fr>
Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
Co-authored-by: Mike Raineri <mraineri@gmail.com>
Co-authored-by: Felix Fontein <felix@fontein.de>

changelogs/fragments/8956-remove-capacitybytes-from-the-required-parameters_list.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - redfish_confg - remove ``CapacityBytes`` from required paramaters of the ``CreateVolume`` command (https://github.com/ansible-collections/community.general/pull/8956).

plugins/module_utils/redfish_utils.py

@@ -3777,8 +3777,8 @@ class RedfishUtils(object):
                 'msg': "Provided Storage Subsystem ID %s does not exist on the server" % storage_subsystem_id}
 
         # Validate input parameters
-        required_parameters = ['RAIDType', 'Drives', 'CapacityBytes']
-        allowed_parameters = ['DisplayName', 'InitializeMethod', 'MediaSpanCount',
+        required_parameters = ['RAIDType', 'Drives']
+        allowed_parameters = ['CapacityBytes', 'DisplayName', 'InitializeMethod', 'MediaSpanCount',
                               'Name', 'ReadCachePolicy', 'StripSizeBytes', 'VolumeUsage', 'WriteCachePolicy']
 
         for parameter in required_parameters:

plugins/modules/redfish_config.py

@@ -164,6 +164,9 @@ options:
     required: false
     description:
       - Setting dict of volume to be created.
+      - If C(CapacityBytes) key is not specified in this dictionary, the size of
+        the volume will be determined by the Redfish service. It is possible the
+        size will not be the maximum available size.
     type: dict
     default: {}
     version_added: '7.5.0'