Common library for OpenStack K8s Operators.

The structure is as:

 github.com/openstack-k8s-operators/lib-common
     /modules/module1/pkg1
                      pkg2
     /modules/module2/pkg1
     /modules/module3

Module path would be:

• github.com/openstack-k8s-operators/lib-common/modules/module1
• github.com/openstack-k8s-operators/lib-common/modules/module2