slow tests in circleci includes fast and isolated tests

[lafirm]

I recently discovered that slow tests in circleci includes not just slow tests but fast and isolated tests (named as cicd tests in Makefile).

was it missed to rename when we switch from slow-test command to cicd-test command in circleci or its named as such with purpose?

style_and_slow_tests -> style_and_cicd_tests? or some sensible name

Run slow tests -> Run cicd tests?

For ref: fb0b741

[tobymao]

yes, small minor thing, feel free to fix it. much appreciated.