I put the SPARK2 parcel into the /opt/cloudera/csd directory. After restarting the scm-server, I was able to distribute and activate CSD. However, SPARK2 does not appear as an option under "Add a Service"
The only related errors I see is an error in the scm-server log indicating that it failed to load CSD from /opt/cloudera/csd because it has no jar extension. Although I think this is a spurious error because the package has already been distrivuted and activate, I did rename it with a jar extension. Upon restarting, I got an error idicating that there was a ZipException when it tried to uncompress it. The file does appear to be a valid gzipped tar archive.