cmd/k8s-operator: default to stable image (#17848)

This commit modifies the helm/static manifest configuration for the
k8s-operator to prefer the stable image tag. This avoids making those
using static manifests seeing unstable behaviour by default if they
do not manually make the change.

This is managed for us when using helm but not when generating the
static manifests.

Updates https://github.com/tailscale/tailscale/issues/10655

Signed-off-by: David Bond <davidsbond93@gmail.com>

cmd/k8s-operator/deploy/chart/Chart.yaml

@@ -26,4 +26,4 @@ maintainers:
 version: 0.1.0
 
 # appVersion will be set to Tailscale repo tag at release time.
-appVersion: "unstable"
+appVersion: "stable"

cmd/k8s-operator/deploy/manifests/operator.yaml

@@ -5366,7 +5366,7 @@ spec:
                     - name: CLIENT_SECRET_FILE
                       value: /oauth/client_secret
                     - name: PROXY_IMAGE
-                      value: tailscale/tailscale:unstable
+                      value: tailscale/tailscale:stable
                     - name: PROXY_TAGS
                       value: tag:k8s
                     - name: APISERVER_PROXY
@@ -5381,7 +5381,7 @@ spec:
                       valueFrom:
                         fieldRef:
                             fieldPath: metadata.uid
-                  image: tailscale/k8s-operator:unstable
+                  image: tailscale/k8s-operator:stable
                   imagePullPolicy: Always
                   name: operator
                   volumeMounts: