Fix another wrong use of server_id

Change-Id: I65723a304360de51c8ee6a6504ddfd2fdd3e9171
Add gear to requirements

nodepool is pretty unhappy without it.

Change-Id: I7a5e58f3b4c75ce4f83b7eb6f0a3a0724fd0abb7
Merge "Fix another wrong use of server_id"
Merge "Add gear to requirements"