fix(http-add-on): use admin port for interceptor health probes (#817)

The interceptor's /livez and /readyz endpoints have moved from the
proxy port to the admin port.

Changes:
- Update livenessProbe port from proxy to admin
- Update readinessProbe port from proxy to admin

Signed-off-by: Vincent Link <vlink@redhat.com>

Author: linkvt

http-add-on/templates/interceptor/deployment.yaml

@@ -110,11 +110,11 @@ spec:
         livenessProbe:
           httpGet:
             path: /livez
-            port: proxy
+            port: admin
         readinessProbe:
           httpGet:
             path: /readyz
-            port: proxy
+            port: admin
         resources:
           {{- toYaml .Values.interceptor.resources | nindent 10 }}
         {{- if .Values.securityContext.interceptor }}