Update EVG to match section 6 of the RFC 3647.md

Updated section 1.1 from scope to overview
Added section 3.2.1 for the possesion of the private key
Changed totally/created new section 3.2.2 to cover all section 11
Moved section 8.1 to section 8 and renamed the others to meet RFC3647
Added the self-audits (8.1.1) under section 8.1
Left/created section 8.7 for pre/readiness audits which do not exist under RFC 3647