added servernameupdate function

scripts/web-add.sh

@@ -121,6 +121,10 @@ del-alias VHOST ALIAS
 
     Del a ServerAlias from an Apache vhost
 
+update-servername VHOST SERVERNAME
+
+    Update the ServerName from an Apache vhost
+
 setphpversion LOGIN VERSION
 
     Change PHP version for LOGIN
@@ -729,6 +733,9 @@ arg_processing() {
         del-alias)
             op_aliasdel "$@"
             ;;
+        update-servername)
+            op_servernameupdate "$@"
+            ;;
         setphpversion)
             op_setphpversion "$@"
             ;;
@@ -803,6 +810,20 @@ op_aliasdel() {
     fi
 }
 
+op_servernameupdate() {
+    if [ $# -eq 2 ]; then
+      vhost="${1}.conf"
+      servername=$2
+
+      [ -f $VHOST_PATH/"$vhost" ] && sed -i "s/ServerName .*/ServerName $servername/" $VHOST_PATH/"$vhost" --follow-symlinks
+
+      apache2ctl configtest 2>/dev/null
+      /etc/init.d/apache2 force-reload >/dev/null
+
+    else usage
+    fi
+}
+
 op_add() {
 
     #