Pull all the sanitizer suppression files from core.
They are not modified and may contain suppression for cases we don't
have yet, but that will avoid throwing these errors in the future due to
backports.

mkdir build && cd build
../configure --with-sanitizers=address
LSAN_OPTIONS="suppressions=${PWD}/../test/sanitizer_suppressions/lsan" \
make check

Should return no error.
Others sanitizers still throw errors at the moment.