publisher.close()/publisher.closeFuture().get() should flush client

[bitkid]

at least that's what i would expect :) i just modified testPullBatch in PubsubIT. should this test pass?

https://gist.github.com/bitkid/0ccc45d8d58dcf2b1ca88f9f9ed9dec6

[danielnorberg]

Use the future returned by publish() to ensure that the message publication completed before closing the publisher.

[bitkid]

ok thx