Kafka IO fixes - #23

Merged

woop merged 3 commits into

feast-dev:masterfrom

Jan 2, 2019

Commits on Dec 31, 2018

fix imports and do not get gcp application default creds, leave it up to the environment
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45f6777
use KafkaReadOptions class, to parse import spec options map
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f019e61
reformat using the google-java-format plugin
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47b6d03