Revert "Revert "Merge pull request #145 from slipstream/feature/graphite""

This reverts commit b0bd55a18f4295ea5c9fa07aa290a399103ef59e.
Added a graphite router and redirector.
Fixed metric key to comply with the proxy filtering rule
Typo
Fixed carbon sending issue
Fixed slipstream usage path
Updated metering server port to 2005 from 8183
Update parent version for release
[maven-release-plugin] prepare release SlipStreamServer-2.1.8
[maven-release-plugin] prepare for next development iteration
Update parent version after release
Update parent version for release
[maven-release-plugin] prepare release SlipStreamServer-2.1.9
[maven-release-plugin] prepare for next development iteration
Update parent version after release
Use unittest assert methods
Fixed version
Fix #154
Fixed #154 (again)
Update parent version for release