Release 2020_011 (2020-04-16)

NixOS 19.03 platform

• Exclude NixOS sources from garbage collection to reduce I/O impact [Hotfix] (#124263).

Gentoo platform

• Improve KVM server startup performance by optimizing the CPU flag detection routing for fc.qemu (#122277).

• Migrate legacy platform management code from Bitbucket to https://gitlab.flyingcircus.io/flyingcircus/fc.platform (#119242).