Release Delta ONL v1.2

sync up with latest OCP

Release 1.1

This pre-release image includes following platforms:

1. AMD64/x86 Image
   AG7648,
   AGC7648A,
   AG5648,
   AG9032,
   WB2448

2. ARM64 Image
   AG6248C

First Release

• AGC7648 and WB2448
• Removed older and none functioning DNI and Agema

All delta platforms are now named 'delta' instead of 'agema' or 'no vendor'. New ONIE upgrade is needed to boot these images. Please look at deltaProducts//ONIE for onie updater and iso.

WB2448 Tested. AGC7648 Untested.