Additional `RequestBody` annotation properties #2717

Job	Run time
check_format (latest)	16s
check_format (nightly)	19s
test_compiled (latest)	43s
coding_standards	31s
test_compiled (nightly)	42s
check_spelling	6s
test_unit (ubuntu-latest, latest)	30s
test_unit (ubuntu-latest, nightly)	43s
test_unit (macos-latest, latest)	44s
test_unit (macos-latest, nightly)	44s
test_unit (windows-latest, latest)	36s
test_unit (windows-latest, nightly)	36s
	6m 30s

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