Fix connectors integration tests configuration in Maven.
Fix connectors integration tests configuration in Maven.

Forgot to submit parent pom.xml changes in previous CL.

	Change on 2018/05/23 by idv <idv@google.com>

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=197776237

GoogleCloudDataproc/hadoop-connectors,GoogleCloudDataproc/hadoop-connectors