* Downsampling supports date_histogram with tz
This comes with caveats, for downsampled indexes at intervals more than
15 minutes. For instance,
- 1-hour downsampling will produce inaccurate
results for 1-hour histograms on timezones shifted by XX:30
- 1-day downsampling will produce inaccurate daily
histograms for not-UTC timezones as it tracks days at UTC.
Related to #101309
* Update docs/changelog/103511.yaml
* test daylight savings
* update documentation
* Offset time buckets over downsampled data with TZ
* Update docs/changelog/103511.yaml
* check for TSDS
* fixme for transport version
* add interval to index metadata
* add transport version
* bump up transport version
* address feedbcak
* spotless fix
The `data-streams/downsampling.asciidoc` test was missing a teardown clean of the ILM policies created. Due to this tests *do not have* the string `ilm` in its name, the automatic teardown process that cleans up the resources (check `ESRestTestCase.java#L815` & `DocsClientYamlTestSuiteIT.java` lines 177 & 195) is not executed for this specific test. In the case this test runs right before the `get-lifecycle` test, the policy won't be automatically deleted hence the test checking the version will fail. Finally, the order of execution of the test is not guaranteed by the suite.
