JSON facets: range faceting to support cache=false parameter

The cache parameter, if set to false, is intended to support non-caching of the search results: https://lucene.apache.org/solr/guide/8_6/common-query-parameters.html#cache-parameter

Based on inspection of

curl "http://localhost:8983/solr/admin/metrics?prefix=CACHE.searcher.filterCache" 

metrics before and after a search we can see that range JSON facet queries currently do not support a cache=false parameter.

Using the techproducts example collection as an illustration, if a 1 MONTH gap value is used then 12 filterCache entries are added for a one year start/end time range.

curl "http://localhost:8983/solr/techproducts/query?q=*:*&rows=0&cache=false" -d 'json.facet={
  manufacturedate_dt_ranges : {
    type : range,
    field : manufacturedate_dt,
    mincount : 1,
    gap : "%2B1MONTH",
    start : "2005-01-01T00:00:00.000Z",
    end   : "2005-12-31T23:59:59.999Z",
  }
}'

Similarly, if a 1 DAY gap value is used then 365 filterCache entries are added for a one year start/end time range and if a 1 HOUR gap value were to be used that would equate to 365 x 24 = 8,760 entries. This means that a single search potentially displaces many or all existing filterCache entries.

This ticket proposes to support the cache parameter for JSON range facet queries:

• the current and default behaviour would remain cache=true and
• via cache=false users would be able run an 'uncommon' search with many range buckets without impact on the 'common' searches with fewer range buckets.