New shell account on Eglide: amj

Summary:
This user account belongs to amj who currently uses
Ysul to run weechat.

The migration from Ysul to Eglide of IRC resources
is requested by Dereckson, see T767.

Ref T975.

Test Plan:

• run the salt state
• check user can login

Reviewers: Sandlayth, amj, dereckson

Maniphest Tasks: T975

Differential Revision: https://devcentral.nasqueron.org/D607