Update -t test option flow, added -i info option

-t test will NOT create an ssh key anymore. The user password list file
gets a .TEST extension

-i info is a new option to just show user/group and ssh key name without
creating anything at all.
Can be used to update old public key names to new format

user_list.txt-sample

@@ -1 +1 @@
-#user_id;user_name;group,subgroup;optional override password;optional override hostname
+#user_id;user_name;group,subgroup;override password;override hostname;override ssh type