Install ripgrep on shellserver and devserver roles

Summary:
Currently, ag is installed as a grep alternative to search source code.

This search utility can certainly be kept, but ripgrep (rg) is faster.

Reference: https://blog.burntsushi.net/ripgrep/

Test Plan: salt-call --local state.apply roles/shellserver/userland-software/base test=True

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D1832