Update core plugins to latest revisions

This updates the core plugins to the latest revisions on their
master branch, adding the following changes:

All plugins:
- Update API version to 2.9-SNAPSHOT in pom.xml

Cookbook:
- Add example of getting plugin name injected

Replication:
- Delete the ReplicationType enum and simplify ReplicationState

Change-Id: If3af328a3e9be33e9182db75459b834ad44db83c
4 files changed