run-aa-test: Fix call to csplit

New version of `csplit` from `rust-coreutils` fails with following error:
  $ csplit R1.13a.1_bluez-spp.expected -f /tmp/EXPECT -b "%d" "/^## alternative ##$/" {*}
  csplit: error: incorrect conversion specification in suffix

Replacing `%d` by `%0d` fixes it.

Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>

run-aa-test

@@ -143,7 +143,7 @@ echo "#---8<--- expected parsed apparmor output from journal"
 cat ${EXPECT_FILE} | sed 's/^/# /'
 echo "#--->8---"
 
-csplit ${EXPECT_FILE} -f ${TMP_DIR}/EXPECT -b "%d" "/^${ALTERNATIVE_SEPARATOR}$/" {*}
+csplit ${EXPECT_FILE} -f ${TMP_DIR}/EXPECT -b "%0d" "/^${ALTERNATIVE_SEPARATOR}$/" {*}
 
 # Old versions of csplit don't provide "--suppress-matched", strip separator separately
 for FILE in ${TMP_DIR}/EXPECT*; do