CDAP-713: Updated SparkPageRank archetype according to migration to services.

@rohitsinha54 @sreevatsanraman The archetypes of SparkPageRank app have been updated regarding to migration from procedures to services. Scripts also have been updated (same as in #704). Please take a look.
Actually, I do not make any changes of the scripts implementation it just copied from other place.
But current implementation make sense if more than 3 (start, stop, status) actions will be added.