parsec-cli-tests.sh: adapt to new serialNumber output

openssl 3.2.0 from yocto prints serialNumber to output
without spaces so support both that and the old with
spaces output to pass the test. Not using regular
expressions to work on simpler grep implementations.

Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>

Author: mikkorapeli-linaro

tests/parsec-cli-tests.sh

@@ -231,7 +231,7 @@ test_csr() {
         run_cmd $OPENSSL req -text -noout -verify -in ${MY_TMP}/${KEY}.csr >${MY_TMP}/${KEY}.txt
         debug cat ${MY_TMP}/${KEY}.txt
 
-        if ! cat ${MY_TMP}/${KEY}.txt | grep "Subject:" | grep "serialNumber = ${TEST_SERIAL}"; then
+        if ! cat ${MY_TMP}/${KEY}.txt | grep "Subject:" | grep -e "serialNumber = ${TEST_SERIAL}" -e "serialNumber=${TEST_SERIAL}"; then
             echo "Error: The CSR does not contain the serialNumber field of the Distinguished Name"
             EXIT_CODE=$(($EXIT_CODE+1))
         fi