fix broken travis build

hpgrahsl / kafka-connect-mongodb

**Unofficial / Community** Kafka Connect MongoDB Sink Connector -> integrated 2019 into the official MongoDB Kafka Connector here: https://www.mongodb.com/kafka-connector

Apache License 2.0

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fix broken travis build #111

Closed hpgrahsl closed 4 years ago

hpgrahsl commented 4 years ago

oraclejdk8 not longer supported it seems thus switching to openjdk. running builds with version 8 + 11 for now