Fix permission denied when writing configs

[theJian]

Description

Added :z to avoid permission denied error on Red Hat base distribution with an SELinux enforcing policy

Motivation and Context

Fix: #1432

How Has This Been Tested?

Tested on Fedora 28 Silverblue.

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.