Add tweet hashtags test for FieldValueCounter
XD-676 Added TuplePropertyAccessor

Added TuplePropertyAccessorTests

Added spel-context.xml via StreamPlugin

Added SpelPropertyAccessorIntegrationTests
Fix StreamPluginTests' tapComponentsAdded test
- Added check to verify both tap & spel-context components are added
XD-752 Avoid duplicate job name entry into JobRegistry
- Added BatchJobRegistryBeanPostProcessor
 - this extends JobRgistryBeanPostProcessor
 - to process only the bean with name "job" (batch job id)
merge XD-723: Use smarter Thread.sleep() in tests

Introduce HttpSource and use it in MetricsTests

Don't swallow InterruptedException

Rewrite test using HttpSource and FileSink helper classes
Use same port as before in tests
Fix XD-629: create tap channel for module ending with sink channel
XD-737 - Added cron-trigger and trigger sources

cron-trigger takes 'cron', and trigger takes 'fixedDelay'

10 seconds is the default for both
XD-671 added registry-aware router
XD-722 Batch - Add notification channel support

- Adds a notification (output) channel to the channel registry
- The following steps should illustrate the added behavior

    > job create --name myjobname --definition "job"
    > stream create --name jobnotifications --definition ":myjobname > log"
    > stream create --name webinput --definition "http > :myjobname"