bug: control plane replicas are duplicated

[Eric Paulsen]

here is the query:

count(up{pod=~`coder.*`, pod!~`.*provisioner.*`, namespace=`oss`} == 1) or vector(0)

it returns 6 replicas despite 3 being deployed. this is because each replica has two matching labels:

app.kubernetes.io/instance=coder
app.kubernetes.io/name=coder

[Danny Kopping]

Fixed by #32