koordinator-yarn-copilot replicas hardcoded and metrics.addr missing from values

[mdryaaan]

Issue description:

Two values.yaml inconsistencies in koordinator-yarn-copilot/v0.1.0:

Bug 1 — deployment replicas ignore values

templates/yarn-operator.yaml hardcodes the replica count:

spec:
  replicas: 2

values.yaml has:

koordYarnOperator:
  replicas: 2

The template never references it. Setting koordYarnOperator.replicas via --set or values override has no effect.

Fix:

spec:
  replicas: {{ .Values.koordYarnOperator.replicas }}

Bug 2 — metrics.addr used in template but absent from values.yaml

templates/yarn-operator.yaml references .Values.koordYarnOperator.metrics.addr:

- --metrics-addr={{ .Values.koordYarnOperator.metrics.addr }}:{{ .Values.koordYarnOperator.metrics.port }}

But values.yaml only defines metrics.port:

koordYarnOperator:
  metrics:
    port: 8080

metrics.addr is absent — the rendered arg is always --metrics-addr=:8080 and cannot be overridden. The equivalent koord-manager in the koordinator chart explicitly documents addr: "".

Fix: Add to values.yaml:

koordYarnOperator:
  metrics:
    addr: ""
    port: 8080