Add "travis_retry" to our build to reduce transitory failures
Add "travis_retry" to our build to reduce transitory failures

Documentation is at https://docs.travis-ci.com/user/common-build-problems/#travis_retry

See https://github.com/docker-library/memcached/pull/14 for the test PR for this pattern.

infosiftr/java,docker-library/java,docker-library/openjdk,vicamo/docker-java