tests: runtime: in_ne: add test for in_node_exporter_metrics #8676

Job	Run time
run-ubuntu-unit-tests (-DFLB_JEMALLOC=On, gcc)	12m 27s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=On, clang)	12m 22s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=Off, gcc)	11m 51s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=Off, clang)	11m 42s
run-ubuntu-unit-tests (-DFLB_SMALL=On, gcc)	11m 51s
run-ubuntu-unit-tests (-DFLB_SMALL=On, clang)	12m 57s
run-ubuntu-unit-tests (-DSANITIZE_ADDRESS=On, gcc)	11m 53s
run-ubuntu-unit-tests (-DSANITIZE_ADDRESS=On, clang)	12m 9s
run-ubuntu-unit-tests (-DSANITIZE_UNDEFINED=On, gcc)	12m 6s
run-ubuntu-unit-tests (-DSANITIZE_UNDEFINED=On, clang)	11m 53s
run-ubuntu-unit-tests (-DFLB_COVERAGE=On, gcc)	43m 19s
run-ubuntu-unit-tests (-DFLB_SANITIZE_MEMORY=On, gcc)	11m 38s
run-ubuntu-unit-tests (-DFLB_SANITIZE_MEMORY=On, clang)	11m 40s
run-ubuntu-unit-tests (-DFLB_SANITIZE_THREAD=On, gcc)	11m 37s
run-ubuntu-unit-tests (-DFLB_SANITIZE_THREAD=On, clang)	11m 51s
run-macos-unit-tests (-DFLB_JEMALLOC=Off)	11m 13s
run-macos-unit-tests (-DFLB_SANITIZE_MEMORY=On)	11m 7s
run-macos-unit-tests (-DFLB_SANITIZE_THREAD=On)	11m 8s
Unit tests (matrix)	1s
	4h 4m 45s

Provide feedback