[HUDI-68] Pom cleanup & demo automation (#846)

- [HUDI-172] Cleanup Maven POM/Classpath
  - Fix ordering of dependencies in poms, to enable better resolution
  - Idea is to place more specific ones at the top
  - And place dependencies which use them below them
- [HUDI-68] : Automate demo steps on docker setup
 - Move hive queries from hive cli to beeline
 - Standardize on taking query input from text command files
 - Deltastreamer ingest, also does hive sync in a single step
 - Spark Incremental Query materialized as a derived Hive table using datasource
 - Fix flakiness in HDFS spin up and output comparison
 - Code cleanup around streamlining and loc reduction
 - Also fixed pom to not shade some hive classs in spark, to enable hive sync

tools/run_travis_tests.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+mode=$1
+
+if [ "$mode" = "unit" ];
+then
+  echo "Running Unit Tests"
+  mvn test -DskipITs=true -B
+elif [ "$mode" = "integration" ];
+then
+  echo "Running Integration Tests"
+  mvn verify -DskipUTs=true -B
+else
+  echo "Unknown mode $mode"
+  exit 1;
+fi
+