[travis] drop deprecated oracle JDKs, add openjdk versions for jdk8 and jdk11#1253

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busbey merged 1 commit intobrianfrankcooper:masterfrom busbey:update-travis-jdks

Nov 8, 2018

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Commits on Nov 8, 2018

[travis] drop deprecated oracle JDKs, add openjdk versions for jdk8 and jdk11
busbey
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