added logstash plugin support and fixed test typo

Added new test cases in wrappers fixtures.
Updated setup.py to include the new wrapper entry point.
Added the logstash plugin to the wrapper module.

made the default the localhost for host.
Added an if around the use redis bool.
If Redis parameters are not defined, use an empty dict to use all defaults.

Change-Id: Iee950a7d05a56d3a45b5f93ccd77306b37662d25
Add script trigger.

Change-Id: I191f8f444f810cf4fe1fb9475aafc747e5dff68d
Added support for least load plugin.

Change-Id: I0c0c9a23e97101f34f144f63e8f9a81f1ac172f9
Added support for Jenkins Campfire plugin

  Basic setup of Campfire notifications from builds.

Change-Id: I4e0bc43a1583fe51e0510743844d66e82b184e23
Merge "Added support for Jenkins Campfire plugin"
Merge "Added support for least load plugin."
Merge "Add script trigger."
Merge "added logstash plugin support and fixed test typo"