oob bios config ChangePassword Action support

Change Password ACTION was not working as expected.
This implementation adds change password support in oob bios config to
enable admin password change via Redfish.
Also, password storing file is removed and only hash is required to be
stored in seedData File.

Tested:
-Set the BIOS password via Set BIOS Pwd hash cmd via KCS interface
-Change BIOS Admin password via Change Password ACTION in Redfish
-Run the Get stored Pwd hash command via KCS interface
-Could get the updated admin password hash and admin Password Flag
 gets set to true
-Verified the updated changes in seedData file as well

Signed-off-by: Ayushi Smriti <smriti.ayushi@linux.intel.com>
Change-Id: If23416d66f1a2daa4292113b899d180fc7bb2894
2 files changed