Update Travis base OS to Xenial

Updating the base OS used in Travis to Xenial from Trusty. This also updates Docker to 18.06 instead of 17.06 in CI.
This commit is contained in:
Graham Krizek 2018-12-28 08:26:14 -06:00
parent cc7ad2f3d9
commit a3b8b43663
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@ -1,4 +1,4 @@
dist: trusty dist: xenial
os: linux os: linux
language: minimal language: minimal
cache: cache: