The current format of the metadata uses an empty boolean value to mean true. That allows for a minor space saving, but results in confusion when reviewing the content of configuration strings.

We should store an explicit true value in the metadata, and do it in such a way that it's backward compatible. An example of where this is confusing is when looking at the wt list -v output from a table with cache_resident set to true:

allocation_size=4KB,app_metadata=,block_allocation=best,block_compressor=,cache_resident=,checkpoint=...