Change matched prompts in LAVA job templates

This commit changes the prompt that LAVA needs to match in the images during tests execution.

For SDK images the 'user@apertis:' prompt is the initial prompt after login and 'root@apertis:' is used after becoming root.

And for the rest of the images '$ ' is the initial prompt after login, the '/home/user #' is used right after becoming root, and '/tmp #' is used during test execution.

Signed-off-by: Luis Araujo luis.araujo@collabora.co.uk