Created new lib/boot_data.py module.
Created new lib/boot_data.py module.

Includes the following:
 - create_boot_table
 - create_valid_boot_list
 - read_boot_lists
 - valid_boot_list
 - boot_results class.

Change-Id: Id1a0b95a5aad93bc8541963430d67c6423125aab
Signed-off-by: Michael Walsh <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation