Reapply "Change OTLP HTTP content_type default to binary (#2558)" #9257

Job	Run time
Bazel nortti	12m 37s
Bazel noexcept	11m 58s
Bazel asan config	15m 32s
Bazel on MacOS	13m 25s
Bazel with async export	12m 19s
Bazel	12m 25s
Bazel tsan config	12m 59s
Bazel valgrind	13m 47s
Bazel with external abseil	12m 33s
Benchmark	8m 11s
CMake test (with abseil)	5m 4s
CMake clang 15 (maintainer mode, abiv2)	14m 2s
CMake clang 15 (maintainer mode, async)	14m 20s
CMake clang 15 (maintainer mode, sync)	13m 58s
CMake do not install test (with otlp-exporter)	14m 21s
CMake gcc 13 (maintainer mode, async)	7m 26s
CMake gcc 13 (maintainer mode, sync)	6m 38s
CMake install test (with abseil)	4m 19s
CMake test (with modern protobuf,grpc and abseil)	19m 22s
CMake msvc (maintainer mode)	8m 1s
CMake msvc (maintainer mode) with C++20	9m 1s
CMake test (with opentracing-shim)	4m 16s
CMake test (build shared libraries with otlp-exporter and static gRPC)	14m 19s
CMake test (with otlp-exporter)	14m 49s
CMake test (without otlp-exporter)	5m 33s
CMake C++14 test(GCC)	4m 44s
CMake C++17 test(GCC)	4m 42s
CMake C++20 test(Clang with libc++)	9m 34s
CMake C++20 test(GCC)	8m 32s
CMake C++23 test(Clang with libc++)	9m 58s
CMake C++23 test(GCC)	9m 16s
CMake test (without otlp-exporter and with async export)	4m 56s
Code coverage	12m 9s
Copyright	4s
DocFX check	1m 7s
Format	17s
markdown-lint	25s
misspell	4s
Plugin -> CMake	1m 48s
Bazel Windows	25m 35s
CMake -> exporter proto	13m 5s
Plugin -> CMake Windows	7m 41s
CMake (With async export) -> exporter proto	13m 1s
CMake -> exporter proto (Build as DLL)	36m 43s
	7h 24m 56s

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