[bug 1258449] Add the creator of the group as member.
[bug 1258449] Add the creator of the group as member.

fxa90id/mozillians,akatsoulas/mozillians,fxa90id/mozillians,akatsoulas/mozillians,johngian/mozillians,mozilla/mozillians,johngian/mozillians,johngian/mozillians,mozilla/mozillians,mozilla/mozillians,akatsoulas/mozillians,fxa90id/mozillians,fxa90id/mozillians,johngian/mozillians,mozilla/mozillians,akatsoulas/mozillians