Fix write_data tests: add Content-Length: 0 to responses for indeterm… #2297

Job	Run time
linux-shared-libs	4m 20s
macos (kqueue)	2m 27s
macos (dispatch_queue)	5m 15s
windows-shared-libs	4m 25s
windows-vc17 (x64)	4m 30s
windows	5m 13s
windows-app-verifier	11m 20s
clang-sanitizers (,thread)	4m 39s
downstream	43m 10s
clang-sanitizers (,address,undefined)	5m 8s
localhost-test-linux	7m 19s
localhost-test-macos (dispatch_queue)	8m 18s
localhost-test-win	7m 7s
windows-vc17 (x86)	4m 23s
byo-crypto	2m 48s
macos-x64	11m 3s
localhost-test-macos (kqueue)	3m 51s
linux-compat (fedora-34-x64)	3m 51s
linux-compat (manylinux1-x64)	4m 1s
linux-compat (al2-x64)	3m 49s
linux-compat (manylinux2014-x86)	4m 56s
linux-compat (manylinux1-x86)	4m 28s
linux-compat (rhel8-x64)	3m 45s
linux-compat (manylinux2014-x64)	3m 41s
linux-compat (opensuse-leap)	4m 40s
linux-compiler-compat (clang-10)	4m 49s
linux-compiler-compat (clang-11)	5m 45s
linux-compiler-compat (gcc-4.8)	3m 27s
linux-compiler-compat (gcc-5)	4m 17s
linux-compiler-compat (gcc-7)	3m 52s
linux-compiler-compat (gcc-6)	4m 17s
linux-compiler-compat (gcc-11)	4m 46s
linux-compiler-compat (clang-8)	7m 3s
linux-compiler-compat (clang-15)	4m 40s
linux-compiler-compat (gcc-8)	4m 23s
linux-compiler-compat (clang-17)	6m 12s
linux-compiler-compat (clang-6)	6m 54s
linux-compiler-compat (gcc-13, --cmake-extra=-DCMAKE_EXE_LINKER_FLAGS="-lresolv")	5m 11s
linux-compiler-compat (clang-9)	6m 47s
	4h 0m 50s

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