Merge pull request #197 from da-ar/ruby_cell_issues

(maint) Pin both Jruby cells to use `dist: trusty`

Author: DavidS

.travis.yml

@@ -16,13 +16,15 @@ matrix:
     - rvm: 2.4.3
       env: PUPPET_GEM_VERSION='~> 5' SIMPLECOV=yes # 5.5
     - env: RVM="jruby-1.7.26" PUPPET_GEM_VERSION='~> 5' JRUBY_OPTS="--debug" SIMPLECOV=yes
+      dist: trusty
       before_cache: pushd ~/.rvm && rm -rf archives rubies/ruby-2.2.7 rubies/ruby-2.3.4 && popd
       cache:
         bundler: true
         directories: ~/.rvm
       before_install: rvm use jruby-1.7.26 --install --binary --fuzzy && gem install bundler -v '~> 1.7.0'
     # disable coverage on jruby9k as this confuses codecov
     - env: RVM="jruby-9.1.9.0" PUPPET_GEM_VERSION='~> 5' JRUBY_OPTS="--debug"
+      dist: trusty
       before_cache: pushd ~/.rvm && rm -rf archives rubies/ruby-2.2.7 rubies/ruby-2.3.4 && popd
       cache:
         bundler: false