Merge github.com:grpc/grpc into optionalize_roundrobin

Makefile

build.yaml

src/core/ext/transport/chttp2/transport/hpack_parser.c

src/core/ext/transport/chttp2/transport/hpack_table.c

src/core/lib/http/parser.c

src/core/lib/json/json_reader.c

templates/Makefile.template

templates/tools/dockerfile/clang_update.include

templates/tools/dockerfile/test/fuzzer/Dockerfile.template

templates/tools/fuzzer/runners.template

templates/vsprojects/buildtests_c.sln.template

templates/vsprojects/grpc.sln.template

templates/vsprojects/vcxproj.template

...onfig/uri_corpus/042dc4512fa3d391c5170cf3aa61e6a638f84342

...onfig/uri_corpus/0e9bbe975f2027e8c39c89f85f667530368e7d11

...onfig/uri_corpus/14b57bcbf1e17b1db1de491ef2ba3768f704b7dc

...onfig/uri_corpus/1794310671a060eead6e5ee66ac978a18ec7e84f

...onfig/uri_corpus/1d30b2a79afbaf2828ff42b9a9647e942ba1ab80

...onfig/uri_corpus/1fcf5d9c333b70596cf5ba04d1f7affdf445b971

...onfig/uri_corpus/23162c8a8936e20b195404c21337ee734d02a6bc