node-test-linter npm installs remark-cli for each build

[gibfahn]

• Version:
• Platform: CI
• Subsystem: build

Look at https://ci.nodejs.org/job/node-test-linter/lastSuccessfulBuild/console

if [ ! -d tools/remark-cli/node_modules ]; then \
	cd tools/remark-cli && ../.././node ../.././deps/npm/bin/npm-cli.js install; fi
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.1.2 (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"freebsd","arch":"x64"})

added 272 packages in 21.24s
if [ ! -d tools/remark-preset-lint-node/node_modules ]; then \
	cd tools/remark-preset-lint-node && ../.././node ../.././deps/npm/bin/npm-cli.js install; fi
npm notice created a lockfile as package-lock.json. You should commit this file.
added 48 packages in 4.735s
Running Markdown linter...

It's only taking 25s each time, but it seems wasteful. I know this is how Travis etc. work, so maybe this should just be closed, but I miss sub two minute lint jobs.

[maclover7]

Hmm, looks like node_modules is git checked-in for ESLint, but not for Remark... should Remark also do this?

cc @watilde

[watilde]

Initially, I did include node_modules at #12756 but the diff was too huge to review so I excluded them as requested. I will make a patch to add them again.