Modify the data structure for new description info.

Modify the data structure for new description info.

When accept group submission, repa will only list the first one
on project name list in the previous. So jenkins can't get
complete project name list to update accepted branch on them.
Now the latest released repa will list the all projects name.
To be compatible the old and the new, so should modify it.
As below, the old formate and the new:
{"description": "project: platform/upstream/e2fsprogs"} -->
{"description": "project: [platform/upstream/e2fsprogs,
                           profile/ivi/meta-ivi]"}

Fixes: #2025

Change-Id: I9392d485484383233d43c78faf278c126f26de0f