Add Spark integration test

This integration test includes spinning up a cluster, running an EDP
job, and deleting the cluster.  Cluster scaling is not included
currently.

The Spark example included is SparkPi.

Implements: blueprint edp-spark-integration-tests
Change-Id: I9cdb3ab29d3364024f5cbe42b3cf4bae398cd547
Merge "Add Spark integration test"