[COOK-3352] Move full path of repository_root attribute into attribute

Signed-off-by: Seth Vargo <sethvargo@gmail.com>
Fix whitespace
Update CHANGELOG format
Version bump to v0.16.4
Bump devodd release
[COOK-3459] Bump Maven3 default version to 3.1.0

Signed-off-by: Seth Vargo <sethvargo@gmail.com>
[COOK-3470] Improvements in /etc/mavenrc template

- Remove JAVA_HOME environment variable
- Use a flexible attribute for MAVEN_OPTS environment variable
[COOK-3529] Add the ability to skip /etc/mavenrc