disable HTTP/2 on kube-rbac-proxy container (#488)

disable HTTP/2 on kube-rbac-proxy container

---------

Signed-off-by: Xavier Coulon <xcoulon@redhat.com>
Co-authored-by: Matous Jobanek <mjobanek@redhat.com>
Co-authored-by: Alexey Kazakov <alkazako@redhat.com>

config/manager/manager.yaml

@@ -72,7 +72,8 @@ spec:
             cpu: 500m
             memory: 500M
       - name: kube-rbac-proxy
-        image: registry.redhat.io/openshift4/ose-kube-rbac-proxy:v4.13.0
+        image: registry.redhat.io/openshift4/ose-kube-rbac-proxy:v4.13
+        imagePullPolicy: Always
         securityContext:
           allowPrivilegeEscalation: false
           capabilities:
@@ -82,6 +83,7 @@ spec:
           - "--secure-listen-address=0.0.0.0:8443"
           - "--upstream=http://127.0.0.1:8080/"
           - "--logtostderr=true"
+          - "--http2-disable=true"
           - "--v=3"
         ports:
           - containerPort: 8443