Most of the timeseries options in the local catalog are stored inside the TimeseriesOptions object that is under the CollectionOptions .

There are only 2 timeseries options that does not follow this pattern:
 - timeseriesBucketsMayHaveMixedSchemaData
 - timeseriesBucketingParametersHaveChanged

These options are instead stored directly in the collection metadata struct.

These 2 options have been added outside of the CollectionOptions for backward comapatibiity reason. In fact, the CollectionOptions are read with strict parsing, and we needed to introduce those options in a minor release.

The goal of this ticket is to take advantage of the next FCV upgrade procedure to bring these 2 options inside the TimeseriesOptions together with the others.