A customer asks you to build a SIP/SIMPLE IM federation between a Cisco Unified Communication Manager IM & Presence environment and a Microsoft Lync 2013 environment. The Lync administrator insists that TLS is used for the federation and that the SSL certificate used by Cisco Unified Communication Manager IM & Presence is signed by the private CA of the enterprise. Which certificate must be in the Certificate Signing Request to accommodate the Lync administrator requirements?