Signed-off-by: NHongtao Gao <hanahmily@gmail.com>

Add  arg `namespace` to func `retagByK8sMeta`, rebuild the relationship between pod and service by labels (#6650)

* Add `namespace` to func `retagByK8sMeta`, rebuild the relationship between pod and service by labels

* add param check

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)

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