Backup of credentials file overwrites the backup file itself if run again

[niklaswesterstrahleknowit]

Describe the bug
While starting to use the app for first time, it creates a backup of the credentials file that existed on users .aws directory (Mac client).

If at this point user restarts the application, while you have credentials file empty 0 bytes and no other login config. And restart the app, it notices the empty credentials file, and takes a new "backup" - overwriting the original backup.

Leapp Version
Mac 0.6.0

To Reproduce
Steps to reproduce the behavior:

1. Install a fresh Leapp
2. Open app, don't add credentials
3. Quit app
4. Open app again
5. Check your homedir

-rw-r--r-- 1 0 Jul 6 12:53 credentials
-rw-r--r-- 1 f 0 Jul 6 12:38 credentials.leapp.bkp

Expected behavior
If credentials.leapp.bkp file exists, that file is not touched again, rather renamed with a random identifier.

Desktop (please complete the following information):

• OS: MacOs
• OS Version 11.4
• Leapp Version 0.6.0

[andreacavagna01]

We will fix this in the next release with this problem:
#133

thanks for reporting

[ericvilla]

I've re-opened the #133 issue that will be closed upon next release

[andreacavagna01]

fixed in v.0.6.1