[cli] make checkers the default when no analyzer is specified
[cli] make checkers the default when no analyzer is specified

Summary:
This is a better default than running the biabduction analysis only, now that
we have several mature checkers.

Reviewed By: jeremydubreil

Differential Revision: D6051186

fbshipit-source-id: 04ac0c6

facebook/infer,jvillard/infer,jvillard/infer,jvillard/infer,jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,facebook/infer,facebook/infer,jvillard/infer,facebook/infer