ci: Update login prompt for ptests

Only the security tests need new password for users logging in for
the first time. As the same j2 template is used for both security test
and generic test, the generic tests fail due to missing password prompt.
So this commit adds a new prompt for the generic test where we need to
enter password directly.

Signed-off-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>