making resourceMap a singleton object and only initialize it once
if one or more CRDs have a resourceName annotation in them.
Added copyright header for checkpoint/checkpoint.go.
Replaced fmt.Errorf with logging.
Change-Id: I54628d69324833e70a75dcf6533e6642dedde9b5
Enabling kubelete checkpoint file parsing to get Pod device info
so that these device information can be passed into CNI plugins
that need specific device information to work on.
Change-Id: I6630f56adc0a8307f575fc09ce9090c1ffca0337
