First draft of kubernetes-5.0.md
First draft of kubernetes-5.0.md

It will explain about kubernetes features with
contrail 5.0

Change-Id: Iefb0c0b7bb735ab468b7d1cdca5582418cebbab1
Partial-bug: #1739843

rombie/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller