Don't use `UrlFetchTransport` in App Engine Flex environment #1893

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Apr 11, 2017

Commits on Apr 10, 2017

Don't use `UrlFetchTransport` in App Engine Flex environment https://github.com/GoogleCloudPlatform/google-cloud-java/issues/1492
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Commits on Apr 11, 2017

Addressed review comments, added ClassLoader information in the output (Flex and Std use different classloaders).
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Reformatted
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