Test on and support additional NICs

[thearossman]

Original development was on Mellanox ConnectX-5. #40 adds support for Intel X710. We'd like to test Retina compilation/functionality on a few more common NICs.

[sippejw]

I've recently shifted to a box using the Intel E810 and can confirm that #40/#54 also work on this NIC.

[sippejw]

Removing the default flag for Mellanox ConnectX-5 in core/Cargo.toml would improve out of the box compilation. When the mlx5 dependencies aren't installed, this flag must be manually removed in order to get Retina to build. This was previously referenced in #1.

retina/core/Cargo.toml

Line 53 in ad405d5

default = ["mlx5"]

[thearossman]

This is great!! @sippejw could we add the server configurations you tested this on to the INSTALL.md documentation? (What CPU/OS were you using?)