* This is a fix for a potential security issue; the old code had edge
cases with unexpected behavior.
* LEMUR_RESTRICTED_DOMAINS is no more, instead LEMUR_WHITELISTED_DOMAINS
is a list of *allowed* domain name patterns. Per discussion in PR #600
* Domain restrictions are now checked everywhere: in domain name-like
CN (common name) values and SAN DNSNames, including raw CSR requests.
* Common name values that contain a space are exempt, since they cannot
be valid domain names.
* UI adjustments to make Key Agreement, Encipher Only, and Decipher Only relationship more user-friendly
* whitespace typo
* Issue #663 switching Encipher/Decipher Only options to be mutually exclusive and un-checkable radio buttons.
* Found a bug in the fields schema that was dropping Key Agreement bit if encipher/decipher only weren't checked
* Allowing that create_csr can be called with an additional flag in the csr_config to adjust the BasicConstraints for a CA.
* If there are no SANs, skip adding a blank list of SANs.
* Adding handling for all the extended key usage, key usage, and subject key identifier extensions.
* Fixing lint checks. I was overly verbose.
* This implements marshalling of the certificate extensions into x509 ExtensionType objects in the schema validation code.
* Will create x509 ExtensionType objects in the schema validation stage
* Allows errors parsing incoming options to bubble up to the requestor as ValidationErrors.
* Cleans up create_csr a lot in the certificates/service.py
* Makes BasicConstraints _just another extension_, rather than a hard-coded one
* Adds BasicConstraints option for path_length to the UI for creating an authority
* Removes SAN types which cannot be handled from the UI for authorities and certificates.
* Fixes Certificate() object model so that it doesn't just hard-code only SAN records in the extensions property and actually returns the extensions how you expect to see them. Since Lemur is focused on using these data in the "CSR" phase of things, extensions that don't get populated until signing will be in dict() form.* Trying out schema validation of extensions
