* Vendors serving v0.9.0
* Updates references per serving v0.9.0 vendoring
- Updates code and tests to refer the required data structure and method/function calls
- duckv1beta1 -> duckv1 conditions
- traffic percent value is now *int64
- containerConcurrency validation method relocation
* fix(golint): exported function should have comment
for NonReadyConditionReason function
* Updates check for removing null targets
fixes the pointer value check
* Updates per review comments
* Update serving to 0.8. Try building.
* Find the right serving version
* Change our own import path to knative.dev to match
* Remove dependency on old version of client
* Update yaml template
* Add sleep to test to deal with race
* fix merge conflict
* Update vendor modules