Including logstash in Centos7 Kickstart fails

- Version: 5.x
- Operating System: Centos7
- Steps to Reproduce: Include logstash in packages list in kickstart

The logstash spec tries to use functionality from shadow-utils at install time. If you add a repo directive and include the package in the %packages list in a kickstart, it will fail because shadow-utils has not been installed yet. shadow-utils needs to be added to the requirements list of the .spec file.

Start by locating the Logstash .spec file and reviewing its package requirements alongside the CentOS 7 Kickstart reproduction described in the issue. Verify that the dependency ordering problem is addressed so Logstash can be included in the %packages list without installation failure.

Written by the indexing model from the issue text.