If you plan on using Android over HTTPS, yes you will need an SSL certificate, if the HTTPS connection is going all the way to the Afaria/Enrollment server. If you are terminating it prior to the Afaria server, you will not need to enter this here.
This is the SSL certificate you would bind to the website in IIS for any address doing the HTTPS protocol. If you ever intend to add iOS to this server, you will need to specify one here.
Tracy Barkley
SAP Active Global Support
SAP US M&A