DRILL-1557: Drill build failure

# Moved "MapR Drill Third Party Artifacts" repository above Pentaho's one.
DRILL-1421: Add unit tests and data.  Bump up drill-optiq version to 0.9-drill-r5.  Fix is in corresponding Optiq version.
DRILL-1445: Fix is in Optiq.  Upgrade Optiq version to 0.9-drill-r6.
DRILL-1636: Shorten the output of toString() methods of HiveTable and HivePartition.
DRILL-1548: Remove jdbc-all from default build

* Allow devs to individually disable maven modules from build
* Removed duplicate dependency "pentaho:mondrian-data-foodmart-json" from exec/java-exec/pom.xml
* Removed duplicate dependency "com.mapr.hadoop:maprfs" from distribution/pom.xml