Allow npm login with username and password arguments

[grimurd]

I am using private npm packages and being able to log in without requiring stdin is a requirement for our CI processes.

I'm creating a docker images that performs npm install while building and because we are using private npm packages I am unable to perform the install since it requires me to login.

If i could create ssh keys or provide username and password arguments that would solve the problem.

[kenany]

#9325, #10920?

[dankonino]

@grimurd this is cool thing and works nicely https://www.npmjs.com/package/npm-cli-login