Release build process

1. Run the build.sh script found under the ci directory. This will clone and build the latest code from https://github.com/OpenLiberty/liberty-tools-eclipse. The built repo and zip will be in the ci/release_artifacts directory.

2. Sign the jar files located in features and plugins (no need to sign the content.jar or artifact.jar).

3. Replace the unsigned jars with the signed jars in the same "ci/release_artifacts/repository" directory.

4. Run the build3.sh script found under the ci directory. This will update the checksum values for the signed jar files.