Updates from version 15.5
- Backport fixes:
- travis: Fix travis failures
- verbs: If the uverbs module is not loaded allow get_devices to retry init
- mlx5: Fix flow tag mask
- rxe: fix rxe compilation with newer kernels
- Revert "buildlib: pick leap over tumbleweed"
- buildlib: pick leap over tumbleweed
- mlx5: Fix compilation on 32 bit systems when sse3 is on
- mlx5: Allocate huge page chunks only when needed
- rxe: Do not use _sockaddr in struct rxe_av
- rxe: Remove duplicate include