Update v-add-web-domain-ftp

Modification of the useradd request to find the right user group --> For the group it is : (id -g $user)

bin/v-add-web-domain-ftp

@@ -84,7 +84,7 @@ fi
 /usr/sbin/useradd $ftp_user \
     -s $shell \
     -o -u $(id -u $user) \
-    -g $(id -u $user) \
+    -g $(id -g $user) \
     -M -d "$ftp_path_a"  > /dev/null 2>&1
 
 # Set ftp user password