Add DEFAULT_HMAC to conf.sh.common

(cherry picked from commit 972d7fd682)

bin/tests/system/conf.sh.common

@@ -290,6 +290,9 @@ DISABLED_ALGORITHM=ECDSAP384SHA384
 DISABLED_ALGORITHM_NUMBER=14
 DISABLED_BITS=384
 
+# Default HMAC algorithm.
+DEFAULT_HMAC=hmac-sha256
+
 #
 # Useful functions in test scripts
 #
@@ -718,6 +721,7 @@ copy_setports() {
         -e "s/@ALTERNATIVE_ALGORITHM@/${ALTERNATIVE_ALGORITHM}/g" \
         -e "s/@ALTERNATIVE_ALGORITHM_NUMBER@/${ALTERNATIVE_ALGORITHM_NUMBER}/g" \
         -e "s/@ALTERNATIVE_BITS@/${ALTERNATIVE_BITS}/g" \
+        -e "s/@DEFAULT_HMAC@/${DEFAULT_HMAC}/g" \
         -e "s/@DISABLED_ALGORITHM@/${DISABLED_ALGORITHM}/g" \
         -e "s/@DISABLED_ALGORITHM_NUMBER@/${DISABLED_ALGORITHM_NUMBER}/g" \
         -e "s/@DISABLED_BITS@/${DISABLED_BITS}/g" \