WFLY-3337 Server should limit number of workers based on available FD's
Undertow 1.0.11.Final
Merge pull request #6274 from ctomc/io

[8.x] WFLY-3337 Server should limit number of workers based on available FD's
Merge pull request #6277 from stuartwdouglas/undertow-8.1

[8.1] Undertow 1.0.11.Final
Release CR3
Undertow 1.0.12.Final