Added the required functionality to abuse ManageCA and ManageCertificate rights.

Two new commands have been added:

- coerceauth: It will abuse the CDP extension to coerce the CA server to perform an authentication attempt to a remote server.
- writefile: It will abuse the CDP extension to write an arbitrary file to a local or remote path. The CA server must have write permission over the remote share.  The most useful use case for this functionality is to obtain a web shell, but it could also been used to perform arbitrary file overwrite/others-.

Now It is possible to get the current CDP list without performing any change in the CA's configuration. Useful to retrieve remote writable shares before uploading a shell.