See failure: [https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/36133/console]

CC yanboliang  mengxr

Author: Joseph K. Bradley <joseph@databricks.com>

Closes #7164 from jkbradley/pic-python-test and squashes the following commits:

156d55b [Joseph K. Bradley] removed flaky python PIC test