EAM API: Readiness Checklist

[javierlozallu]

Problem description
Readiness Checklist has been updated in commonalities v0.4.0 and has big changes from v0.3.0

Expected action
Update the document to be aligned with https://wiki.camaraproject.org/display/CAM/API+Release+Process#APIReleaseProcess-APIreadinesschecklist