[feature request] Add e2e for broadcastjob

[zmberg]

What would you like to be added:
PR fix broadcastjob one issue, but there should be related e2e for this pr.

So we can add e2e for this pr, and related code.

[whitewindmills]

Can this issue be assigned to me?

[zmberg]

/assign @whitewindmills

[xiangpingjiang]

/assign

[ls-2018]

@zmberg @xiangpingjiang Is there any progress?

[sagnik3788]

/assign