[BEAM-3762] Update Dataflow worker container image to support unlimited JCE policy.

[lukecwik]

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[lukecwik]

Run Dataflow ValidatesRunner

[lukecwik]

The tests were passing but eventually timed out https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/5054/

[lukecwik]

Run Dataflow ValidatesRunner

[jkff]

Since this is a trivial change per se, LGTM whenever you get tests to pass.

[lukecwik]

Run Dataflow ValidatesRunner