Fix text grouping issue on github actions

github action grouping is broken because we were outputing "::endgroup" where
it needs "::endgroup::". This patch also added some addtional grouping around
contianer setup phase, making output easier to read.

.github/actions/setup/action.yml

@@ -18,6 +18,6 @@ runs:
         echo export REPO_ROOT=$GITHUB_WORKSPACE >> /tmp/ci_setup
         echo export CI_ROOT=$REPO_ROOT/travis-ci >> /tmp/ci_setup
         echo export VMTEST_ROOT=$CI_ROOT/vmtest >> /tmp/ci_setup
-        echo 'echo ::endgroup' >> /tmp/ci_setup
+        echo 'echo ::endgroup::' >> /tmp/ci_setup
       shell: bash