CDI: configure registry on start

Currently CDI registry is reconfigured on every
WithCDI call, which is a relatively heavy operation.

This happens because cdi.GetRegistry(cdi.WithSpecDirs(cdiSpecDirs...))
unconditionally reconfigures the registry (clears fs notify watch,
sets up new watch, rescans directories).

Moving configuration to the criService.initPlatform should result
in performing registry configuration only once on the service start.

Signed-off-by: Ed Bartosh <eduard.bartosh@intel.com>

pkg/cri/server/service_linux.go

@@ -19,6 +19,7 @@ package server
 import (
 	"fmt"
 
+	"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
 	"github.com/containerd/containerd/pkg/cap"
 	"github.com/containerd/containerd/pkg/userns"
 	cni "github.com/containerd/go-cni"
@@ -87,6 +88,14 @@ func (c *criService) initPlatform() (err error) {
 		}
 	}
 
+	if c.config.EnableCDI {
+		reg := cdi.GetRegistry()
+		err = reg.Configure(cdi.WithSpecDirs(c.config.CDISpecDirs...))
+		if err != nil {
+			return fmt.Errorf("failed to configure CDI registry")
+		}
+	}
+
 	return nil
 }