[Minor] Fix outdated Spark version

This is causing the event logs to include a file called SPARK_VERSION_1.0.0, which is not accurate.

Author: Andrew Or <andrewor14@gmail.com>
Author: andrewor14 <andrewor14@gmail.com>

Closes #2255 from andrewor14/spark-version and squashes the following commits:

1fbdfe9 [andrewor14] Snapshot
805a1c8 [Andrew Or] JK. Update Spark version to 1.2.0 instead.
bffbaab [Andrew Or] Update Spark version to 1.1.0