- boot:
    prompts:
    # escape the brackets to ensure that the prompt does not match
    # kernel debug lines which may mention initramfs
    - '\(initramfs\)'

in the  job definition I am including  - 
boot:
     .....
     failure_retry: 4
     prompts:
      - '\(# \)'

But in the job execution log getting "auto-login-action: Wait for prompt ['\\(# \\)', 'Login incorrect', 'Login timed out'] (timeout 00:07:52)".

Also if we want to debug while running the job which will be the best possible approach to follow. 
In the Documentation got information on "Debugging Django issues" which states two settings are required in
/etc/lava-server/settings.conf

• "DEBUG": true,
• "USE_DEBUG_TOOLBAR": true,

Thanks,
Hemanth.