fetch additional document metadata

[deric4]

Need more than one call for getting all the metadatas

example:

$ aws ssm get-document --name ${DOC_NAME} --generate-cli-skeleton output
{
    "Name": "Name",
    "CreatedDate": "1970-01-01T00:00:00",
    "DisplayName": "DisplayName",
    "VersionName": "VersionName",
    "DocumentVersion": "DocumentVersion",
    "Status": "Status",
    "StatusInformation": "StatusInformation",
    "Content": "Content",
    "DocumentType": "DocumentType",
    "DocumentFormat": "DocumentFormat",
    "Requires": [
        {
            "Name": "Name",
            "Version": "Version"
        }
    ],
    "AttachmentsContent": [
        {
            "Name": "Name",
            "Size": 0,
            "Hash": "Hash",
            "HashType": "HashType",
            "Url": "Url"
        }
    ],
    "ReviewStatus": "ReviewStatus"
}