emit pv id even if there is not yet costdata

pkg/cloud/awsprovider.go

@@ -5,7 +5,6 @@ import (
 	"compress/gzip"
 	"encoding/csv"
 	"fmt"
-	"github.com/aws/aws-sdk-go/aws/endpoints"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -16,6 +15,8 @@ import (
 	"sync"
 	"time"
 
+	"github.com/aws/aws-sdk-go/aws/endpoints"
+
 	"k8s.io/klog"
 
 	"github.com/kubecost/cost-model/pkg/clustercache"