RANGER-5266: [Generated by Gemini AI]: (security-admin) REST endpoints to set log level while service is running

[fateh288]

What changes were proposed in this pull request?

Cherrypick of https://github.com/apache/ranger/commit/346fe34a41446cf29abefb627b61ab01376da4f3

How was this patch tested?

mvn clean install No additional testing for ranger-2.8 Tested in master