Automated g4 rollback of changelist 182429134.
Automated g4 rollback of changelist 182429134.

*** Reason for rollback ***

pub issue has been fixed

*** Original change description ***

fix(travis): Pin to 2.0.0-dev.17.0 SDK.

We can revert this after dart-lang/sdk#31940 is fixed.

Temporary workaround for #789

***

PiperOrigin-RevId: 182566676

chalin/angular2,kevmoo/angular,kevmoo/angular,chalin/angular2,angulardart/angular,angulardart/angular,chalin/angular2,matanlurey/angular,kevmoo/angular,matanlurey/angular,matanlurey/angular,angulardart/angular