Revert "CDAP-527: update SparkPageRank program to read directly from stream"
Merge pull request #18 from cdap-guides/revert-14-CDAP-527

Revert "CDAP-527: update SparkPageRank program to read directly from str...
Fix to work with release/2.5.2
Merge pull request #19 from cdap-guides/feature/fix-2.5.2

Fix to work with release/2.5.2