Improve names for enrollmentDP.zip and webadmin.p12

[b-t-e]

It would be nice to have said files named with e.g. the server's FQDN included, to effortlessly distinguish multiple server instances.

[myTeckNetCode]

@b-t-e - I will check again; however, during the FQDN process, if you select internal DNS or go through the Let's Encrypt process, the FQDN is referenced from within the enrollmentDP itself. Webdmin is just a user account that I defaulted to. It has nothing to do with the FQDN tbh.

[b-t-e]

No, I was just thinking to distinguish different servers as a user (enrollment) or admin (webadmin) by having the server name included in the file names.