Walt Karas

[approve ci ubuntu]

I marked this for backport to 9.2, since it seems likely there will be later changes to HttpSM.cc that will have to be backported to 9.2.

https://github.com/apache/trafficserver/pull/8830 should be merged prior to merging this PR.

The Au test run finished successfully, even though it is reported as "pending": https://ci.trafficserver.apache.org/job/Github_Builds/job/autest/968/consoleFull (See the line 'Commit message: "Merge commit '654417e6ab6fce629d50976c71dac90a32a4b348' into HEAD"').

I thought that 10-Dev was for certain select large features.

There would probably be many merge conflicts in HttpSM.cc every time we merged master to 10-Dev. In any case, more urgent work has come up, so I must put this...

The practical way to do this is to merge it on master right after release 9.2 comes out (and make sure it's the first commit in any hypothetical 9.3).

Note that I did try to simply backport patch 8, but I got errors in "make check".

This fixes problems with https://github.com/apache/trafficserver/pull/8812 .

[approve ci autest]