React on comment. Add another patch to proposal.

  *) mod_proxy/ssl: Proxy SSL client certificate configuration and other proxy

     SSL configurations broken inside <Proxy> context.  PR 63430.

     [Ruediger Pluem, Yann Ylavic]

     The patch applies clean after backporting r1818726 above.

     Plus:

     Follow up to r1859371: extend to other ap_proxy_connection_create[_ex]() users.

     This function now now handles SSL reuse as well as the "proxy-request-hostname"

     note (SNI), so let's also call it unconditionnaly in all proxy modules.

     On the mod_ssl side, since this note has the lifetime of the connection, don't

     reset/unset it during handshake (ssl_io_filter_handshake).

     The 2.4 backport patch applies clean after backporting r1818726 above.

     trunk patch: http://svn.apache.org/r1859371

     2.4.x patch: http://home.apache.org/~rjung/patches/httpd-2.4.x-proxy-ssl-proxy-section-r1859371.patch

                  http://svn.apache.org/r1859422

     2.4.x patch: http://home.apache.org/~rjung/patches/httpd-2.4.x-proxy-ssl-proxy-section-r1859371-r1859422.patch

     +1: rjung

     -1: 

     rpluem says: I would prefer adding r1859422 to this backport proposal to

                  have the issue fixed for other proxy modules as well.

     -1: 

     rjung: I added r1859422 now. I had the plan to add the second backports

            separately, but I am totally fine to combine them.

PATCHES/ISSUES THAT ARE BEING WORKED

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