As per discussion on VPP call - since the APIs are used in CSIT tests,
and there has not been changes in a while, mark them as stable from
the API change process PoV.
Type: improvement Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
Change-Id: Ia644e1dfcd9d182cc6f10089fc44397a61e8aaf6