Replace --no-suppressions with --include-suppressed
Summary:
The `--no-suppressions` flag would override the `.flowconfig` and
pretend like there are no suppression comments.
The `--include-suppressed` flag includes suppressed errors in the error output.
How is this different?
1. In JSON mode, we can output a `suppressions: [ ... ]` field for each error
2. Unused suppression comments still error
Reviewed By: samwgoldman
Differential Revision:
D4976259
fbshipit-source-id:
e2ce73e3af3fd68c027500ee68a6b6590d9262d7