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

Readme.md

@@ -24,19 +24,31 @@ Inside the base folder there are
 * ssh-keygen for temporary holding the PEM/PUB files
 * zip file which holds the created user list, password and PEM/PUB files
 
+## Options
+
+### -t (test)
+
+Run in test mode. This will *NOT* create any groups or users. Nor will it create any ssh key files.
+`user_password` output file will be written with `.TEST` extension
+
+### -i (info)
+
+Do not created anything at all, just print out info strings
+
 ## User list creation
 
 In the `/root/users/` folder there needs to be a file called '*user_list.txt*'
 
 This is a CSV type file with the following layout
 
-ID | Username | Group | Optional Password | Override host name
--|-|-|-|-
+ID | Username | Group | Optional Password | Override host name | Override ssh key type
+-|-|-|-|-|-
 
 The ID, Username and Group column must be filled.
 For sub groups add them with a *,* The first group is the master group
 If the password column is filled, the string from here will be used as the PEM Key password.
 If a override hostname is set it will be used instead of `hostname`
+If the ssh key type is set, it will override the default *ed25519* type. This is not recommended. Only *rsa* is allowed. This is for setting up backwards compatible lists.
 
 The ID can be any string in any form.
 It can also be left empty. It is not used at the moment