fix(dka): Change default healthCheckPath to fix k8s probes (#2584)

Previously the paths used by probes returned large responses when the
number of clusters was large (>60ish). This seems to cause the kubelet
to restart DKA pod. Changing the healthCheckPath to a static path
ensures smaller responses and is safe to do because the http server is
only started after full initialization of managed cluster endpoints.

services/dex-k8s-authenticator/1.3.4/defaults/cm.yaml → services/dex-k8s-authenticator/1.3.5/defaults/cm.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 kind: ConfigMap
 metadata:
-  name: dex-k8s-authenticator-1.3.4-d2iq-defaults
+  name: dex-k8s-authenticator-1.3.5-d2iq-defaults
   namespace: ${releaseNamespace}
 data:
   values.yaml: |-
@@ -41,3 +41,7 @@ data:
         memory: 128Mi
     rbac:
       create: true
+    # Use a static file for the health check path. Using the default health check path
+    # returns a large response which seemingly kubelet does not like, causing pods to
+    # be killed unnecessarily.
+    healthCheckPath: /token/static/clippy.svg

services/dex-k8s-authenticator/1.3.4/dex-k8s-authenticator.yaml → services/dex-k8s-authenticator/1.3.5/dex-k8s-authenticator.yaml

@@ -34,7 +34,7 @@ spec:
   releaseName: dex-k8s-authenticator
   valuesFrom:
     - kind: ConfigMap
-      name: dex-k8s-authenticator-1.3.4-d2iq-defaults
+      name: dex-k8s-authenticator-1.3.5-d2iq-defaults
     - kind: ConfigMap
       name: dex-k8s-authenticator-overrides
       optional: true