Allow administrators to access sensitive directories

Since NXP-20238 only the system user can access a directory defined with the following permissions:

<permissions>
  <permission name="Read">
    <group>__Nobody__</group>
  </permission>
</permissions>

This typically prevents an administrator from creating an entry in the oauth2Clients directory which is required for NXP-22513.
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Administrators now have access to the sensitive directories.