Add featuregates to support 0.12 functionality

[nellyc]

Is this a BUG REPORT or FEATURE REQUEST?:

Uncomment only one, leave it on its own line: /kind enhancement

What happened: We need to add some featuregates live migration, cpu manager

What you expected to happen: feature gates enabled

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• kubevirt-ansible version(use git rev-parse HEAD): should be on master and on a new 0.12 tag
• KubeVirt version (use virtctl version):
• OpenShift/Kubernetes version (use kubectl version or oc versions):
• VM or VMI specifications:
• Ansible version (use ansible --version):
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[myakove]

added in https://github.com/kubevirt/kubevirt-ansible/pull/533

[kbidarkar]

@nellyc, the needed changes are added from 0.12, so can we close this now?