release trex-1.12.1

[alip]

Upstream released 1.8.1 on 2020-02-05 with RexOps/Rex@08a9f2d

Here's the outstanding list of patches that we should push upstream:

• 9a50427
• 2d579c3
• ebdb350
• a3e2b4b

[alip]

Rebased upon upstream master in the trex-1.8.1. 1.6.0..1.8.1 is mostly minor fixes, a couple of cmdb performance improvements and support for systems which are at the moment irrelevant to us.

This needs some testing. WIP.

[alip]

Upstream has just released 1.12.1.

[alip]

Obsoleted by: #28