api: v2: reload: Prevent duplicated request via api v2 reload #8684

Job	Run time
run-ubuntu-unit-tests (-DFLB_JEMALLOC=On, gcc)	12m 22s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=On, clang)	12m 21s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=Off, gcc)	11m 33s
run-ubuntu-unit-tests (-DFLB_JEMALLOC=Off, clang)	11m 52s
run-ubuntu-unit-tests (-DFLB_SMALL=On, gcc)	11m 44s
run-ubuntu-unit-tests (-DFLB_SMALL=On, clang)	12m 27s
run-ubuntu-unit-tests (-DSANITIZE_ADDRESS=On, gcc)	11m 51s
run-ubuntu-unit-tests (-DSANITIZE_ADDRESS=On, clang)	11m 44s
run-ubuntu-unit-tests (-DSANITIZE_UNDEFINED=On, gcc)	12m 8s
run-ubuntu-unit-tests (-DSANITIZE_UNDEFINED=On, clang)	11m 56s
run-ubuntu-unit-tests (-DFLB_COVERAGE=On, gcc)	43m 26s
run-ubuntu-unit-tests (-DFLB_SANITIZE_MEMORY=On, gcc)	11m 40s
run-ubuntu-unit-tests (-DFLB_SANITIZE_MEMORY=On, clang)	12m 14s
run-ubuntu-unit-tests (-DFLB_SANITIZE_THREAD=On, gcc)	11m 33s
run-ubuntu-unit-tests (-DFLB_SANITIZE_THREAD=On, clang)	11m 35s
run-macos-unit-tests (-DFLB_JEMALLOC=Off)	12m 13s
run-macos-unit-tests (-DFLB_SANITIZE_MEMORY=On)	11m 25s
run-macos-unit-tests (-DFLB_SANITIZE_THREAD=On)	12m 12s
Unit tests (matrix)	1s
	4h 6m 17s

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