Author: Sara Arjona
MDL-61998 cohort: Implement privacy API
http://git.moodle.org/gw?p=moodle.git;a=commit;h=54f5ded42056998397a22e9cafe1ff67f3e7c633
http://github.com/moodle/moodle/commit/54f5ded42056998397a22e9cafe1ff67f3e7c633
+ 3.3 en [privacy:metadata:cohort_members,core_cohort]
+ 3.3 en [privacy:metadata:cohort_members:cohortid,core_cohort]
+ 3.3 en [privacy:metadata:cohort_members:timeadded,core_cohort]
+ 3.3 en [privacy:metadata:cohort_members:userid,core_cohort]