QA:Testcase change language

Description

This test case is to check the language switch on the desktop.

How to test

• If the display manager supports switching language, do it there.
• Since Gnome 46 release:

1. Log into the desktop
2. Click on the gearbox icon from the system status menu on the upper right corner or run gnome-control-center from Activity or Terminal.
3. Click on "System" on left side and then "Region & Language" on right side of your screen.
4. Click Language row and select a language you want to use.
5. You should get a notification to log out, otherwise press Alt-F2 and run gnome-session-quit.
6. Log in again

• In other cases:

1. Install system-config-language if not installed
2. run system-config-language
3. select a language you want to use
4. Log out and log in again.
5. Note:- this only changes root user language.

Expected Results

The expected language should be available on the desktop.