Update emissary-defaultns.yaml.in

[zencircle]

Fix the permission version 3.10.0 E0430 18:21:29.962315 1 reflector.go:166] "Unhandled Error" err="pkg/kates/client.go:469: Failed to watch *unstructured.Unstructured: can't watch endpointslices.v1.discovery.k8s.io: forbidden" logger="UnhandledError"

Description

fix the permission of the role emissary-ingress

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Testing

manual tets

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[maxbrunet]

Noticed the same error

endpointslices are part of a different API group so a new rule is needed:

- apiGroups:
  - discovery.k8s.io
  resources:
  - endpointslices
  verbs:
  - get
  - list
  - watch

[jeremyascott]

@zencircle I think this may have flown under your radar. Could you make the suggested change please?