DRILL-1339: Use EStore to track running query status.

Move common code to ZkAbstractStore.

Get full profile from foreman directly.

code cleanup.

code change based on review comments.

ZK store check node exists before delete. Add error message in case of error.

Use a different profile for running queries, so that running query would have different ZK node from completed queries.

More log.  Do not delete query state in EStore. In stead, modify the state in EStore.
DRILL-1612: Add maven enforcer rules for maven and Java version

* Allows compilation with JDK version 1.7.x and maven [3.0.4,4) only.
+ Updated maven-enforcer-plugin to 1.3.1.
DRILL-1347: Update Hive storage plugin to Hive version 0.13.1 from current version 0.12.0.
DRILL-1528: Update HiveRecordReader to read Hive Decimal types with scale and precision.
DRILL-1524: Fix Hive Parquet SerDe reading issue when all columns are projected.
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.