function createResourceName(containerName, blobName, forSAS) {
  // Resource name
  if (blobName && !forSAS) {
    blobName = encodeURIComponent(blobName);
    blobName = blobName.replace(/%2F/g, '/');
    blobName = blobName.replace(/%5C/g, '/');
    blobName = blobName.replace(/\+/g, '%20');
  }

  // return URI encoded resource name
  if (blobName) {
    return containerName + '/' + blobName;
  }
  else {
    return containerName;
  }
}
Create resource name
@ignore

@param {string} containerName Container name
@param {string} blobName      Blob name
@return {string} The encoded resource name.