virtualization: Fix cpu/memory limits.
virtualization: Fix cpu/memory limits.

Closes #67

vefimova/virtlet,nhlfr/virtlet,nhlfr/virtlet,vefimova/virtlet,Mirantis/virtlet,nhlfr/virtlet,Mirantis/virtlet,nhlfr/virtlet,vefimova/virtlet,vefimova/virtlet