* make sync metrics concurrency

* add changelog

* add changelog

* polish codes

* change default value

* remove unnecessary codes
Co-authored-by: NEvan <evanljp@outlook.com>
Co-authored-by: NZhenxu Ke <kezhenxu94@apache.org>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Redis Lettuce span UI doesn't show detailed Redis command parameters in 'db.statement' field (#6614)

* Append the root slash(/) to getIndex and getTemplate requests
Signed-off-by: NGao Hongtao <hanahmily@gmail.com>

* Document this bug
Signed-off-by: NGao Hongtao <hanahmily@gmail.com>

* Fix ALS K8SServiceRegistry didn't remove the correct entry

* Add changes
Co-authored-by: NZhenxu Ke <kezhenxu94@apache.org>

Remove the close_before_method and close_after_method parameters of custom-enhance-plugin to avoid memory leaks (#6632)

* Remove the close_before_method and close_after_method parameters of custom-enhance-plugin to avoid memory leaks

* refine
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Add function `retagByK8sMeta` and opt type `K8sRetagType.Pod2Service` in MAL for k8s to relate pods and services. (#6608)

Support metrics grouped by scope labelValue in MAL, no need global same labelValue as before. (#6495)

Add telemetry data about metrics in, metrics scraping and trace in metrics to zipkin receiver. (#6516)

* CDS: Support config `agent.span_limit_per_segment`

* fix missing logical.

* fix ci

* polish
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Resolves #6481

Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>
Co-authored-by: NZhenxu Ke <kezhenxu94@apache.org>