Reverted changes to historical release notes.

Old releases should refer to CDK, since that is what the project
and artifacts were called at the time of release.
Change Flume header name prefix set by Log4jAppender from 'cdk.partition' to 'kite'.partition'.
Use 'kite' prefix in property names.
Change Maven Plugin parameter name prefixes from 'cdk' to 'kite'.
Update kite-tools for rename.
Remove CDK image.
Add jdiff XML for Kite so that first diff with the new name can be generated.