Update sed command to account for commented lines in configuration files.

2021.2/scripts/util/util-update-plnx-config.sh

@@ -39,7 +39,10 @@ else
 	if grep -Fq $KEY $CONFIG_FILE; then
 		# Replace existing configuration line
 		echo -e "\tOLD value :" $(cat $CONFIG_FILE | grep $KEY)
-		sed -i "s@^$KEY=.*@$REPLACE@g" $CONFIG_FILE
+		#sed -i "s@^$KEY=.*@$REPLACE@g" $CONFIG_FILE
+		#previous sed command did not match when the line started with a hashtag
+		# # CONFIG_xxx is not set
+		sed -i.orig -E "s@^(# |)$KEY.*@$REPLACE@g" $CONFIG_FILE
 		echo -e "\tNEW value :" $(cat $CONFIG_FILE | grep $KEY)
 	else
 		# Add new string