admins: allow Sam Smith to access stat100[23]

As per RT #8853; also remove sam's old user phuedx from the deployers
group. That user will be removed at a later date after confirmation from Sam.

Change-Id: I555b2411dcd8c8ab9ed7557285370e6206b90f7c
Signed-off-by: Giuseppe Lavagetto <glavagetto@wikimedia.org>