out_opentelemetry: add service account token auth support #10

Job	Run time
run-ubuntu-unit-tests (-DFLB_JEMALLOC=On, gcc)	14m 8s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=On, clang)	14m 27s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=Off, gcc)	13m 30s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=Off, clang)	13m 23s
run-ubuntu-unit-tests (-DFLB_SMALL=On, gcc)	13m 37s
run-ubuntu-unit-tests (-DFLB_SMALL=On, clang)	14m 12s
run-ubuntu-unit-tests (-DSANITIZE_ADDRESS=On, gcc)	13m 45s
run-ubuntu-unit-tests (-DSANITIZE_ADDRESS=On, clang)	13m 45s
run-ubuntu-unit-tests (-DSANITIZE_UNDEFINED=On, gcc)	13m 48s
run-ubuntu-unit-tests (-DSANITIZE_UNDEFINED=On, clang)	13m 32s
run-ubuntu-unit-tests (-DFLB_COVERAGE=On, gcc)	1h 0m 16s
run-ubuntu-unit-tests (-DFLB_SANITIZE_MEMORY=On, gcc)	13m 15s
run-ubuntu-unit-tests (-DFLB_SANITIZE_MEMORY=On, clang)	13m 14s
run-ubuntu-unit-tests (-DFLB_SANITIZE_THREAD=On, gcc)	13m 24s
run-ubuntu-unit-tests (-DFLB_SANITIZE_THREAD=On, clang)	13m 21s
run-ubuntu-unit-tests (-DFLB_SIMD=On, gcc)	13m 18s
run-ubuntu-unit-tests (-DFLB_SIMD=On, clang)	13m 15s
run-ubuntu-unit-tests (-DFLB_SIMD=Off, gcc)	13m 31s
run-ubuntu-unit-tests (-DFLB_SIMD=Off, clang)	13m 24s
run-qemu-ubuntu-unit-tests	0s
run-aarch64-unit-tests	0s
run-macos-unit-tests	0s
Unit tests (matrix)	1s
	5h 5m 6s

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