Decouple kubernetes-dependent an non-dependent parts of server

Move non-kubernetes-dependent portions of server struct to libkpod.
So far, only the struct fields have been moved and not their dependent
functions

Signed-off-by: Ryan Cole <rcyoalne@gmail.com>

libkpod/containerserver.go

@@ -0,0 +1,62 @@
+package libkpod
+
+import (
+	"github.com/containers/image/types"
+	cstorage "github.com/containers/storage"
+	"github.com/docker/docker/pkg/registrar"
+	"github.com/docker/docker/pkg/truncindex"
+	"github.com/kubernetes-incubator/cri-o/oci"
+	"github.com/kubernetes-incubator/cri-o/pkg/storage"
+)
+
+// ContainerServer implements the ImageServer
+type ContainerServer struct {
+	runtime            *oci.Runtime
+	store              cstorage.Store
+	storageImageServer storage.ImageServer
+	ctrNameIndex       *registrar.Registrar
+	ctrIDIndex         *truncindex.TruncIndex
+	imageContext       *types.SystemContext
+}
+
+// Runtime returns the oci runtime for the ContainerServer
+func (c *ContainerServer) Runtime() *oci.Runtime {
+	return c.runtime
+}
+
+// Store returns the Store for the ContainerServer
+func (c *ContainerServer) Store() cstorage.Store {
+	return c.store
+}
+
+// StorageImageServer returns the ImageServer for the ContainerServer
+func (c *ContainerServer) StorageImageServer() storage.ImageServer {
+	return c.storageImageServer
+}
+
+// CtrNameIndex returns the Registrar for the ContainerServer
+func (c *ContainerServer) CtrNameIndex() *registrar.Registrar {
+	return c.ctrNameIndex
+}
+
+// CtrIDIndex returns the TruncIndex for the ContainerServer
+func (c *ContainerServer) CtrIDIndex() *truncindex.TruncIndex {
+	return c.ctrIDIndex
+}
+
+// ImageContext returns the SystemContext for the ContainerServer
+func (c *ContainerServer) ImageContext() *types.SystemContext {
+	return c.imageContext
+}
+
+// New creates a new ContainerServer
+func New(runtime *oci.Runtime, store cstorage.Store, storageImageServer storage.ImageServer, ctrNameIndex *registrar.Registrar, ctrIDIndex *truncindex.TruncIndex, imageContext *types.SystemContext) *ContainerServer {
+	return &ContainerServer{
+		runtime:            runtime,
+		store:              store,
+		storageImageServer: storageImageServer,
+		ctrNameIndex:       ctrNameIndex,
+		ctrIDIndex:         ctrIDIndex,
+		imageContext:       imageContext,
+	}
+}