Release 2.5.0 RC1

[Jonathan Creasy]

Here is a release candidate for 2.5.0. 

https://github.com/OpenTSDB/opentsdb/releases/tag/v2.5.0RC1

OpenTSDB - Changelog
* Version 2.5.0RC1 (2024-12-12)

Noteworthy Changes:
  - Bump Jackson to 2.14.1 WARNING: The minimum JDK is now version 8 due to Jackson. (#2263)
  - Enhance range tests and regex and add better default for output validator (#2217)
  - Converting to using SystemD systemctl (#1515)
  - Status API, Start of a new HTTP API (#1742)
  - Allow end_time = start_time to be able to query and delete a single datapoint. (#2036)
  - Add support for splitting rollup queries (#1853)
  - ExplicitTags filtering with FuzzyFilters (#1896)
  - Add "check_tsd_v2" script (#1567)
  - Do PutDataPointRpc.GroupCB asynchronously (#1472)
  - Tag Normalization Plugin Support (#1525)

Bug Fixes:
  - Fix race condition in UID lookup (#2176)
  - Tighten up the regexes for Gnuplot URI params per multiple security reports. (#2272)
  - Trigger callback chain when reached limit. (#2204, #839)
  - Use ConcurrentHashMap when serializing tags. (#2282, #1055)
  - Test for null, avoid NPE (#2281, #2280)
  - Ensure we always add the {} for group_by filters, otherwise the non group_by filters act as group_by filters (#1697)
  - Added tracking of metrics which are null due to auto_metric being disabled Fixes (#786,#2042)
  - Fixed function description Fixes (#841,#2040)
  - Fix concurrent result reporting from scanners (#1753)
  - Fix SaltScanner race condition on spans maps (#1651)
  - Fix an edge case in TsdbQuery.getScanEndTimeSeconds() (#1581, #1582)
  - Fix a compilation error about missing FirstDifference (#1471)

Security Fixes:
  - Bump Logback version to patch CVE-2021-42550 (#2208, #2218)
  - Make sure the inputs are only plain ASCII printables first. Fixes CVE-2018-12972, CVE-2020-35476 (#2275)