DRILL-1414: Move profile storage to DFS rather than using PStore
DRILL-98: MongoDB storage plugin

This commit disables MongoDB PStore due to changes to the PStore interface.
DRILL-1425: Handle unknown operators in web ui
DRILL-1426: Add IO wait stats to HBaseRecordReader
DRILL-1398: Clone HivePartition only when InputSplit has non-null partition in InputSplit->Partition map.
DRILL-1407: Add scan size calculator option to HBase storage plugin configuration
DRILL-1371: HBase queries fail when hbase.scan.sizecalculator.enabled is set to false
DRILL-1419: JSON reader regression from project pushdown patch.

Patch amended to include a minimal subset of the test file needed to confirm the issue.
Drill 1416: convert_from() on JSON fails - regression
DRILL-1125: Apply casts to handle different input types in the join condition
DRILL-1432: Propagate user credentials from client to the fragments
DRILL-1427: Failure to initialize storage plug-in results in complete failure of drill-bit initialization
DRILL-1444: Fix cancel in C++ client library
DRILL-1465: Enhance push partition filter rule to handle Filters appearing above a Project. Modify group scans' digests to include number of files being considered.

Resource files for testing partition filter pushdown.
DRILL-1428 - SqlLine fails to start on Windows
DRILL-1368 - Fix to read Parquet Gzip files on systems
DRILL-1297: C++ Client. Hide Dependencies From Public API to enable using C++ Client as a DLL
DRILL-1411: Disable feature by default. Add an overcommit factor to the fragment limit. Can be enabled and overcommit factor can be set as bootstrap parameters.
DRILL-1468: Ensure text reader returns all columns when the
field `columns` present in projected field list