Update pre-commit config to also run trialing whitespace and check yaml syntax check.
Update pre-commit config to also run trialing whitespace and check yaml
syntax check.

Plexxi/st2,StackStorm/st2,nzlosh/st2,StackStorm/st2,nzlosh/st2,Plexxi/st2,StackStorm/st2,Plexxi/st2,StackStorm/st2,nzlosh/st2,Plexxi/st2,nzlosh/st2