OCIRepository client cert auth

[rashedkvm]

Signed-off-by: Rashed Kamal [email protected]

Implements

spec:
  certSecretRef:
    name: regcert

The certSecretRef points to a Kubernetes secret in the same namespace as the OCIRepository:

When parsing secret referenced by certSecretRef, the following keys are used

certFile=client.crt
keyFile=client.key
caFile=ca.crt

Example secret:

kubectl create secret generic regcert \
  --from-file=certFile=client.crt \
  --from-file=keyFile=client.key \
  --from-file=caFile=ca.crt

resolves #814

[stefanprodan]

LGTM

Thanks @rashedkvm 🥇