zeppelin git commit: ZEPPELIN-2615. Upgrade pig to 0.17.0 to support spark engine

Repository: zeppelin Updated Branches: refs/heads/branch-0.7 ff1a35306 -> c3c6c7a45 ZEPPELIN-2615. Upgrade pig to 0.17.0 to support spark engine ### What is this PR for? Pig 0.17.0 has just been released. This PR is to upgrade pig to 0.17.0 and support spark engine which is a big milestone

zeppelin git commit: ZEPPELIN-2615. Upgrade pig to 0.17.0 to support spark engine

Repository: zeppelin Updated Branches: refs/heads/master 19eb80a24 -> f04ddfbe7 ZEPPELIN-2615. Upgrade pig to 0.17.0 to support spark engine ### What is this PR for? Pig 0.17.0 has just been released. This PR is to upgrade pig to 0.17.0 and support spark engine which is a big milestone of