import mesosphere.marathon.stream.Implicits._ brought in a method that
implicitly converted scala maps to java maps; we were calling the java
containsKey Java map method instead of contains scala map method,
and this led the map to be converted to a Java version, only to have
the containsKey method invoked, and entire data structure
discarded.
Also adds a flat DependencyPlan computation benchmark for apps and pods.
if originalRuns.get(specId).forall(_ != spec) instead for brevity?