This commit adds some changes to PR #731, some of them are:
- Add distribution point to the CRL
- Properly stop the goroutine that generates the CRLs
- CRL config validation
- Remove expired certificates from the CRL
- Require enable set to true to generate a CRL
This last point is the principal change in behaviour from the previous
implementation. The CRL will not be generated if it's not enabled, and
if it is enabled it will always be regenerated at some point, not only
if there is a revocation.
This change is to make easier the use of embedded authorities. It
can be difficult for third parties to know what fields are required.
The new init methods will define the minimum usable configuration.
When the CA is embedded in a third party product like Caddy, the
config needed to use placeholders to be valid. This change adds
a new method `NewEmbeddedAuthority` that allows to create an
authority with the given options, the minimum options are a root
and intermediate certificate, and the intermediate key.
Fixes#218
* authorize returns []interface{}
- operators in this list can conform to any interface the user decides
- our implementation has a combination of certificate claim validators
and certificate template modifiers.
* provisioners can set and enforce tls cert options
