Config to enable/disable updater

It’d be great if we could disable the updater feature via dvc config. It’s rather noisy due to the frequent release cycle of DVC.

[mdscruggs]

That sounds good @shcheklein.

Users who must or want to stabilize on a specific release of DVC should be able to do so without excessive alerting.

[shcheklein]

Ok, how about this plan:

1. we introduce a config option to alter the interval (default is once a day)
2. we introduce a mechanism to notify about critical updates (support a list of versions affected on the updater side, emphasize the message on the DVC side, etc).

would it suffice?

I really wan to avoid turning it off completely. It’s dangerous because we are dealing with data here.