Updated the packaging script to allow packaging future platforms. (Xi…

…linx#1627)

Work Done
---------
1) Added a new option to point to other XRT images
2) Updated the packaging flow to recongize the xilinx_u200_xdma_201820_2 and xilinx_u250_xdma_201820_2 platforms and if found to package the scheduler FW image from alternate XRT installations.
3) Removed an unneeded echo command

Merge ertbuild.sh from 2019.1 (Xilinx#1612)

Links uuid for libxrt_aws.so (Xilinx#1467)

(cherry picked from commit 836d766)

whitelist CentOS version 7.6 in setup.csh and setup.sh (Xilinx#985) (X…

…ilinx#990)

Merge pull request Xilinx#905 from rradjabi/kernelUpgradeFixF1

Kernel Upgrade Fix for F1

Completes the logic for checking UUID instead of XclbinId on F1 (Xili…

…nx#890)

* parse uuid on F1 instead of expecting xclbinid

* Get uuid from axlf for comparisson. Tested and passes on F1.

* Using uuid_compare, and making xclGetXclbinUuid() a const function.

* Fix comparisson to 0, and use uuid_is_null instead

Added an example to build boot images with platform (Xilinx#875)

Merge pull request Xilinx#798 from stsoe/2018.2_XDF

Enable KDS for AWS F1

Merge pull request Xilinx#758 from sonals/doc2018.3

Mark register read/write APIs as deprecated and minor updates to docs

Merge pull request Xilinx#675 from rradjabi/aws-fpga-dir-fixes

Properly set AWS_FPGA_REPO_DIR for F1 builds