Mostly remove "blacklist" and "whitelist" from netd.

Rename these to allowlist and denylist.

This change is mostly automatically generated with:

sed -i 's/WHITE/ALLOW/g' server/*.{cpp,h} libnetdbpf/{*.cpp,/include/netdbpf/*.h} bpf_progs/*.[ch]
sed -i 's/white/allow/g' server/*.{cpp,h} libnetdbpf/{*.cpp,/include/netdbpf/*.h} bpf_progs/*.[ch]
sed -i 's/BLACK/DENY/g' server/*.{cpp,h} libnetdbpf/{*.cpp,/include/netdbpf/*.h} bpf_progs/*.[ch]
sed -i 's/black/deny/g' server/*.{cpp,h} libnetdbpf/{*.cpp,/include/netdbpf/*.h} bpf_progs/*.[ch]
sed -i 's/White/Allow/g' server/*.{cpp,h} libnetdbpf/{*.cpp,/include/netdbpf/*.h} bpf_progs/*.[ch]
sed -i 's/Black/Deny/g' server/*.{cpp,h} libnetdbpf/{*.cpp,/include/netdbpf/*.h} bpf_progs/*.[ch]

plus manual changes to FirewallController.h and NdcDispatcher.cpp
to make them continue to use INetd::FIREWALL_WHITELIST and
INetd::FIREWALL_BLACKLIST.

INetd (and FIREWALL_WHITELIST and FIREWALL_BLACKLIST) are not
being fixed in this change because doing so would require
changing frozen AIDL files, which is a more complex undertaking.

Also manually change occurrences in the test.

Finally, fix some formatting errors found by clang-format, and
some errors such as "a allowlist" (should be "an allowlist") or`
"allowspace" (should be "whitespace").

Bug: 161896447
Test: atest netd_unit_test netd_integration_test
Test: crosshatch builds, boots, no IptablesRestoreController errors in logs
Change-Id: I3f5b864686651134a50e90b28fc9914bfa3f9a8e