Documentation: Add inclusive-language documentation. #1350

Job	Run time
osx clang --disable-ssl	1m 59s
linux rpm fedora	6m 50s
Prepare container	1m 6s
linux gcc --disable-ssl	3m 11s
linux clang --disable-ssl	2m 48s
linux gcc test -300	9m 11s
linux gcc test 301-600	6m 20s
linux gcc test 601- unstable	6m 21s
linux clang test sanitizers -300	12m 40s
linux clang test sanitizers 301-600	9m 16s
linux clang test sanitizers 601- unstable	10m 52s
linux gcc test -ljemalloc -300	9m 45s
linux gcc test -ljemalloc 301-600	6m 35s
linux gcc test -ljemalloc 601- unstable	6m 38s
linux gcc system-test-dpdk dpdk -100	16m 50s
linux gcc system-test-dpdk dpdk 101- unstable	14m 13s
linux gcc system-test-userspace -100	15m 40s
linux gcc system-test-userspace 101- unstable	12m 59s
linux gcc system-test -100	18m 11s
linux gcc system-test 101- unstable	16m 39s
linux clang system-test sanitizers -100	20m 9s
linux clang system-test sanitizers 101- unstable	18m 28s
linux x86 gcc --disable-ssl	2m 41s
	3h 49m 22s

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