New service readEnrollmentResult in enrollment interface

[olivier-heurtier-ingroupe]

No description provided.

[wberges]

Perhaps it would be more interesting and less complex to have a simple WS just providing the enrollment process status (enrollment, verification, rejected, accepted...).
And if needed another one able to retrieve more detailed (and possibly sensitive) information.
No? :)

[olivier-heurtier-ingroupe]

@wberges
I have updated this PR to have two services instead of one. Let me know if this is OK.
See read-enroll-results.pdf for an extract of the doc focused on the 2 services.