Add a git hook to lint the codes in https://github.com/apache/skywalking-nodejs, using husky

Some files in the repository are missing newlines at the very end, as pointed out by @nrbrook in #1026

Classes/CocoaLumberjack.h was specifically mentioned, but there could be other files that are missing this as well.

https://github.com/heptiolabs/healthcheck

This will give us metric on healtcheck and more granularity on checks we want to have.

/cc @slim-bean @joe-elliott

These configs are part of the "adding Logstash to filebeat modules getting started experience" and therefore its very likely the first time a user will see a LS config.

For the best experience we should add a fair few comments to better inform what is going on. The user sees the nested field reference for the first time and there is a try three grok pattern scheme with two mutate renames that w

In the current version of FASTER C++, on Linux, we use libaio for async IO handling. It is a known issue that libaio is not very efficient. Recently, io_uring is released with Linux kernel 5.1, which advertises to be a high performance aysnc IO library. It would be useful to try it and see if we can improve disk performance on Linux by replacing libaio with it.

More details for io_uring

The generic Windows audit log config lacks many event ids, e.g.

• registry events
• driver load service addition events, System/7045 and Security/4697
• likely others