The usage record descriptions have CloudStack's internal integer IDs
which makes it difficult for users to read their usages. This PRs
introduces a new API boolean flag `oldformat` which when set to true
would return the older description format, otherwise by default
listUsageRecords will process and return description with names and
UUIDs of resources.
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>