SDC-16334: Fix SOLR 8 packaging issue
SDC-16334: Fix SOLR 8 packaging issue

Even though we added a new module for SOLR, we actually haven't added it
to the root pom.xml file making the full build fail.

Change-Id: I4740d27e8e594bf6126f5d4aa01cbd8c2198d4fa
Reviewed-on: https://review.streamsets.net/c/datacollector/+/36644
Reviewed-by: Eddie Park <bacc1c505cb1756c59242c0a8ee25cd990a210e9@streamsets.com>

streamsets/datacollector,streamsets/datacollector,streamsets/datacollector,streamsets/datacollector,streamsets/datacollector