chore(discovery): adjust for EndpointSlices (#226)

Author: andrewazores

charts/cryostat/templates/role.yaml

@@ -11,9 +11,9 @@ metadata:
     {{- include "cryostat.labels" . | nindent 4 }}
 rules:
 - apiGroups:
-  - ""
+  - discovery.k8s.io
   resources:
-  - endpoints
+  - endpointslices
   verbs:
   - get
   - list

charts/cryostat/tests/role_test.yaml

@@ -62,10 +62,10 @@ tests:
     asserts:
       - equal:
           path: rules[0].apiGroups
-          value: [""]
+          value: ["discovery.k8s.io"]
       - equal:
           path: rules[0].resources
-          value: ["endpoints"]
+          value: ["endpointslices"]
       - equal:
           path: rules[0].verbs
           value: ["get", "list", "watch"]