Log Message:
lang/nodejs: Update to 9.6.1.

nodejs 9.6.1

events:
- events.usingDomains being set to false by default was removed in
  9.6.0 which was a change in behavior compares to 9.5.0. This
  behavior change has been reverted and the events object now has
  usingDomains preset to false, which is the behavior in 9.x prior
  to 9.6.0

nodejs 9.6.0

async_hooks:
- deprecate unsafe emit{Before,After}
- rename PromiseWrap.parentId to PromiseWrap.isChainedPromise
deps:
- update node-inspect to 1.11.3
- ICU 60.2 bump
- Introduce ScriptOrModule and HostDefinedOptions to V8
http:
- add options to http.createServer() for IncomingMessage and
  ServerReponse
http2:
- add http fallback options to .createServer
https:
- Adds the remaining options from tls.createSecureContext() to the
  string generated by Agent#getName(). This allows https.request() to
  accept the options and generate unique sockets appropriately.
inspector:
- --inspect-brk for es modules
lib:
- allow process kill by signal number
module:
- enable dynamic import
- dynamic import is now supported
n-api:
- add methods to open/close callback scope
src:
- allow --perf-(basic-)?prof in NODE_OPTIONS
vm:
- add support for es modules