Running android emulator during jenkins build

I have managed to fix the problem.

1. Install Qemu-KVM and cpu-checker:
   sudo apt install qemu-kvm cpu-checker
2. Check if KVM is available (as jenkins user):
   $ kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
3. Create group kvm and add jenkins to this group:
   addgroup kvm
usermod -a -G kvm jenkins
4. Change group ownership for /dev/kvm:
   chgrp kvm /dev/kvm
5. Create udev rule:
   $ sudo nano /etc/udev/rules.d/60-qemu-kvm.rules
KERNEL=="kvm", GROUP="kvm", MODE="0660"
6. Reboot