Mellanox Linux Drivers and Install Script for Mellanox ConnectX-3, ConnectX-3 Pro, ConnectX-4 Lx, ConnectX-4, and ConnectX-5 Ethernet adapters.

Fixes:
- Added support for installing RHEL 7.6 OSs (platform x86_64) and RHEL 7.6 ALT OSs(platform PPCLE) using YUM.
- Fixed the issue where RDMA connection persisted even after dropping the network interface.
- Fixed the issue where small packets with non-zero padding were wrongly reported as "checksum complete" even though the padding was not covered by the csum calculation. These packets now report "checksum unnecessary".
In addition, an ethtool private flag has been introduced to control the "checksum complete" feature: ethtool --set-priv-flags eth1 rx_no_csum_complete on/off
- Fixed the wrong wording in the FW tracer ownership startup message (from "FW Tracer Owner" to "FWTracer: Ownership granted and active").
- Fixed the issue where GID entries referenced to by a certain user application could not be deleted while that user application was running.
- Fixed the issue of when attempting to allocate an excessive number of VFs per PF in operating systems with kernel versions below v4.15, the allocation failed due to a known issue in the Kernel.
- Fixed the issue where MLNX_OFED could not be installed on RHEL 7.x Alt OSs using YUM repository.


Enhancements:
- Increased the amount of maximum virtual functions (VF) that can be allocated to a physical function (PF) to 127 VF.
- UDP source port for RoCE v2 packets is now calculated by the driver rather than the firmware, achieving better distribution and less congestion. This mechanism works for RDMACM QPs only, and ensures that RDMA connection messages and data messages have the same UDP source port value.
- Added the ability to manually disable Local Loopback regardless of the number of open user-space transport domains.
- Integrated NEO-Host for orchestration and management of host networking into MLNX_OFED package.