Fix Assert on HttpSource module fixture

- Use "org.springframework.util.Assert"
  instead of "org.eclipse.jdt.internal.core.Assert",
XD-707 Support different control & data transport
Add script to get sqlite jar
Add wait for server to test script
Output hadoop env when running tests
Remove unnecessary complexity in FieldValueCounterHandler
XD-1083 + XD-1092 - Add StepExecution list REST endpoint + shell command

* Add new BatchStepExecutionsController adding support for `/batch/executions/{jobExecutionId}/steps`
* Add shell command `job execution step list {jobExecutionId}`
* Add tests

XD-1083 + XD-1092 Code Review Changes
XD-1053: Add 'http get' command to shell