[SDK] Allow metric instrument names to contain / characters #8465

Job	Run time
CMake clang 14 (maintainer mode, async)	19m 45s
CMake gcc 12 (maintainer mode, C++11, async)	10m 39s
CMake clang 14 (maintainer mode, sync)	19m 59s
CMake gcc 12 (maintainer mode, async)	14m 17s
CMake gcc 12 (maintainer mode, sync)	10m 30s
CMake msvc (maintainer mode)	12m 4s
CMake test (without otlp-exporter)	6m 42s
CMake gcc 4.8 (with otlp exporter)	11m 14s
CMake test (with abseil)	10m 10s
CMake gcc 4.8 (without otlp exporter)	3m 51s
CMake test (with opentracing-shim)	6m 1s
CMake C++20 test(Clang with libc++)	16m 15s
CMake C++20 test(GCC)	11m 54s
CMake test (without otlp-exporter and with async export)	6m 20s
Bazel	20m 13s
Bazel with async export	20m 47s
CMake do not install test (with otlp-exporter)	27m 42s
CMake install test (with abseil)	7m 26s
CMake test (with modern protobuf,grpc and abseil)	34m 49s
CMake test (build shared libraries with otlp-exporter and static gRPC)	24m 25s
CMake test (with otlp-exporter)	20m 24s
Plugin -> CMake	1m 25s
Bazel asan config	10m 27s
Bazel noexcept	22m 25s
Bazel nortti	19m 51s
Bazel on MacOS	28m 16s
Bazel tsan config	20m 29s
Bazel valgrind	27m 8s
Bazel with external abseil	19m 11s
Benchmark	14m 30s
Copyright	9s
Format	16s
CMake -> exporter proto	19m 18s
Bazel Windows	36m 45s
Plugin -> CMake Windows	11m 2s
CMake (With async export) -> exporter proto	17m 30s
CMake -> exporter proto (Build as DLL)	16m 59s
Code coverage	13m 39s
DocFX check	1m 13s
markdown-lint	9s
misspell	5s
	9h 56m 14s

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