This recommended update to rubygem-puppet 3.8.7 fixes the following issues:

Puppet was updated to 3.8.7:
https://docs.puppetlabs.com/puppet/3.8/reference/release_notes.html#puppet-386
https://docs.puppetlabs.com/puppet/3.8/reference/release_notes.html#puppet-387

A -master-unicorn subpackage was added with unicorn systemd unit file and config.

The following tracked bugs were fixed:

- puppet update corrupted /etc/sysconfig/puppet (boo#916005)