Need smoke tests for the playdoh dev server

[kumar303]

We have some integration tests for core playdoh functionality in https://ci.mozilla.org/job/playdoh-funfactory/ but we're starting to see some regressions that show up when you try to start up a dev server from a fresh playdoh clone.

We should add a smoke test that tries to start a dev server each time someone commits a playdoh change.