vppapigen: crcchecker: report in-progress messages
vppapigen: crcchecker: report in-progress messages

in-progress messages do not give any API stability guarantees,
by design, to allow easy iteration. Provide an easy way
to know which messages are in-progress.

If as a user you see "in-progress" message that you want
to use in production, please contact the feature owner
and discuss the path to removing the "in-progress" status
before that.

Change-Id: I27729995e26a70af373e642b871dbb5cc5526959
Type: improvement
Signed-off-by: Andrew Yourtchenko <eb6233fe2fbd585844f4fb8426b53b186ab379b1@gmail.com>

FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp