Deploy default web server content

Summary:
This will avoid that error:

Rendering SLS 'base:roles/webserver-content' failed: Jinja variable 'salt.utils.context.NamespacedDictWrapper object' has no attribute 'web_content_sls'; line 9

Test Plan: deploy on db-A-001

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D3643