Permit disabling the Java Self-Installer, in case you need to run a Java agent manual installation.
https://docs.newrelic.com/docs/java/java-agent-self-installer
https://docs.newrelic.com/docs/java/java-agent-manual-installation
New attribute node['newrelic']['server_monitoring']['logfile_path'] for Java agent.
Allow Java Agent app_group to write log_file_path.
Renamed 'install'/'perform_self_install'-attribute to 'execute_install', references #83 and #84
README update
Merge branch 'ktgit-master'
Refactoring