Add Fedora 31 to CI
Fedora 31 was released recently, it should be added to the CI, or replace Fedora 30.
As Fedora 31 updated to glibc 2.30, which deprecated sys/sysctl.h
header, #1298 (closed) needs to adressed first.
Fedora 31 was released recently, it should be added to the CI, or replace Fedora 30.
As Fedora 31 updated to glibc 2.30, which deprecated sys/sysctl.h
header, #1298 (closed) needs to adressed first.