function decodeVersionId(reqQuery) {
    if (!reqQuery || !reqQuery.versionId) {
        return undefined;
    }
    return decodeVID(reqQuery.versionId);
}
decodeVersionId - decode the version id from a query object
@param {object} [reqQuery] - request query object
@param {string} [reqQuery.versionId] - version ID sent in request query
@return {(Error|string|undefined)} - return Invalid Argument if decryption
fails due to improper format, otherwise undefined or the decoded version id