config/utils: Add generate_config.py

config/utils: Add generate_config.py

Previously, generate_config.py resided in securedlab git repo, but
since we want to be able to use it in both securedlab (for validation
of new PDF files during verify jobs) and installer projects (for
actually parsing the PDF file into usable installer inputs), we
decided to move it to a common location, also available for regular
users.

This change merely replicates the file from securedlab git repo.

Change-Id: I9ff7889e408338d3911853fe01b752b013de1db7
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit 74cdf3ea93fb3a91ed03924fdb17076d36fc4cb9)