Close steps after updating presentation.
Close steps after updating presentation.

TEST=./run_recipe.py json:example before and after
R=iannucci@chromium.org, martiniss@chromium.org
BUG=372179

Review URL: https://codereview.chromium.org/424873003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@285964 0039d316-1c4b-4281-b951-d872f2087c98

luci/recipes-py,luci/recipes-py,shishkander/recipes-py,shishkander/recipes-py