Release v2.0.3

[TrahStevAmz]

Description of changes:

• Releasing fpga_mgmt_examples to demonstrate how the FPGA Management C API is used to perform FPGA image slot load and clear operations.
• Releasing the PacketGen Dual Instance Loopback example to the SDK Virtual Ethernet Application.
• Fixing the clkgen CLIs to prevent the configuration of clock groups that were removed from the AWS_CLK_GEN IP in customer designs.