Consider Requiring Logging in Certificate Transparency

[BenWilson-Mozilla]

Consider updating Mozilla's Root Store Policy to require that TLS server certificates be logged using Certificate Transparency.

[robstradling]

@BenWilson-Mozilla It's worth noting that no other Root Store Policy requires TLS server certificates to be logged to CT logs. Chrome and Apple both have separate CT Policies:

• The Chrome CT Policy says:
  "The issuance of certificates that are not CT compliant is not considered mis-issuance or a violation of Chrome’s root program; such certificates will simply fail to validate in CT-enforcing versions of Chrome."
• The Apple CT Policy doesn't explicitly state the Apple's root program's view on CT non-compliance, but I think the intent was to mirror Chrome's approach.