[Snyk] Security upgrade ubuntu from trusty to trusty-20190515

[snyk-bot]

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• vendor/golang.org/x/net/http2/Dockerfile

We recommend upgrading to ubuntu:trusty-20190515, as this image has only 135 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	714	NULL Pointer Dereference SNYK-UBUNTU1404-OPENSSL-1049144	No Known Exploit
	514	Improper Input Validation SNYK-UBUNTU1404-PYTHON34-589946	No Known Exploit
	886	Off-by-one Error SNYK-UBUNTU1404-SUDO-1065770	Mature
	686	Improper Handling of Exceptional Conditions SNYK-UBUNTU1404-SUDO-473059	Mature
	536	Out-of-bounds Write SNYK-UBUNTU1404-SUDO-546522	Mature

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[mistaken-pull-closer[bot]]

Thanks for your submission.

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[pull-dog[bot]]

*Ruff* :dog: I wasn't able to find any Docker Compose files in your repository at any of the given paths in the pull-dog.json configuration file, or the default docker-compose.yml file :weary: Make sure the given paths are correct.

Files checked:

• docker-compose.yml

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Commands

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