travis: Update debian/ubuntu environments

There are new major LTS environments out; bump up to the latest
for each and drop the old Ubuntu trusty.  Part of cleaning up
our CI.

diff --git a/.travis.yml b/.travis.yml
index c2342b0f4f12623892496acb9f7f3db9f21d0923..a77bf827fa46ed3f5031f1208076eca98738adf4 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,11 +3,10 @@ dist: trusty
 sudo: required
 
 env:
-  - ci_distro=ubuntu ci_suite=trusty ci_test=no  # TODO: use libcurl on this
-  - ci_docker=debian:stretch-slim ci_distro=debian ci_suite=stretch
-  - ci_docker=debian:stretch-slim ci_distro=debian ci_suite=stretch ci_configopts="--with-curl"
-  - ci_docker=debian:stretch-slim ci_distro=debian ci_suite=stretch ci_test=no  # TODO gpgme flake https://github.com/ostreedev/ostree/pull/664#issuecomment-276033383
+  - ci_docker=debian:buster-slim ci_distro=debian ci_suite=stretch
+  - ci_docker=debian:buster-slim ci_distro=debian ci_suite=stretch ci_configopts="--with-curl"
   - ci_docker=ubuntu:xenial ci_distro=ubuntu ci_suite=xenial
+  - ci_docker=ubuntu:bionic ci_distro=ubuntu ci_suite=bionic
 
 script:
   - ci/travis-install.sh