VMAccessForLinux does not properly create sshd_config backup

When using the VMAccessForLinux blade to reset the sshd_config, the code states that a backup should be created in /var/cache/vmaccess/backup. During testing the directory is not created, nor is a backup file created in the directory if it has been manually created before testing.

Locate the VMAccessForLinux reset handling and the code responsible for backing up sshd_config. Reproduce the reset behavior and inspect /var/cache/vmaccess/backup. Done means the directory is created when needed and a backup file is created there during the reset.

Written by the indexing model from the issue text.