International keyboard layouts

[grimCephalopod]

Describe the bug
After the installation, the VC Keyboard layout is set to the correct language, but the x11 layout remains as US default. This means that the GDM login screen will fail until you enter the password with the US keymap.

To Reproduce
Steps to reproduce the behavior:

1. Launch installer
2. Set keyboard layout to anything but 'US'
3. Continue installation as regular
4. After installation, when trying to login into GDM, the keyboard layout is still set to 'US'

Expected behavior
For a smoother install process, the keyboard layout should be set to what the user specified in the installation wizard.

Environment (please complete the following information):

• Clear Linux OS Version: 35720
• Installer Version : latest in install .iso
• Platform: laptop using 'azerty' keyboard layout

Additional context
I guess there is something in the effect of 'localectl set keymap [MAP]' in the post-install script, to which should be added 'set-x11-keymap [MAP]'.