Document - Operator updated options.

The rwx_storage_class is deprecated.

The maven_data_volume_size is deprecated.

The rwx_supported option is new (bool) default: true. This option allows users to indicate whether the cluster storage supports RWX mode. MTA uses RWX volumes for shared persistent caches such as Maven m2.

The hub_bucket_storage_class option has been added. This option allows users to specify the storage class used for the bucket volume.  When not defined, the default storage class will be used.

The cache_storage_class option has been added. This option allows users to specify the storage class used for the cache volume .  When not defined, the default storage class will be used. When rwx_supported (false), this option is ignored.

The cache_data_volume_size option has been added. Default 100Gi. This option allows users to determine the size of the cache volume.  When not defined, the default storage class will be used. When rwx_supported (false), this option is ignored.