sandbox: get and store guest details.

Get and store guest details after sandbox is completely created.
And get memory block size from sandbox state file when check
hotplug memory valid.

Signed-off-by: Clare Chen <clare.chenhui@huawei.com>
Signed-off-by: Zichang Lin <linzichang@huawei.com>

virtcontainers/api.go

@@ -122,6 +122,11 @@ func createSandboxFromConfig(ctx context.Context, sandboxConfig SandboxConfig, f
 		return nil, err
 	}
 
+	// get and store guest details
+	if err := s.getAndStoreGuestDetails(); err != nil {
+		return nil, err
+	}
+
 	return s, nil
 }