Make unit tests pass on Windows (#179)

* Bump riff dependency to latest

* Adjust indirect dependencies and k8s.io/apimachinery to match the changes in
  riff's Gopkg.lock.
* Move k8s.io/apimachinery dependency from indirect to direct group in go.mod.
* Redo go.sum based on Go 1.11.4 after `go clean -modcache`. See:
    - golang/go#29278
    - golang/go#29282
* Add go.sum entries for Windows

* Make unit tests pass and image relocate work on Windows

Fixes https://github.com/pivotal-cf/pfs/issues/175
Fixes https://github.com/pivotal-cf/pfs/issues/135

list.go

@@ -2,6 +2,7 @@ package scan
 
 import (
 	"fmt"
+	"runtime"
 	"strings"
 
 	"github.com/ghodss/yaml"
@@ -18,6 +19,13 @@ func ListImages(res string, baseDir string) ([]string, error) {
 	imgs := []string{}
 
 	docs := strings.Split(string(contents), "---\n")
+	if runtime.GOOS == "windows" {
+		// allow lines to end in LF or CRLF since either may occur
+		d := strings.Split(string(contents), "---\r\n")
+		if len(d) > len(docs) {
+			docs = d
+		}
+	}
 	for _, doc := range docs {
 		if strings.TrimSpace(doc) != "" {
 			y := make(map[string]interface{})

list_test.go

@@ -116,7 +116,7 @@ var _ = Describe("ListImages", func() {
 		})
 
 		It("should return a suitable error", func() {
-			Expect(err).To(MatchError(HaveSuffix("no such file or directory")))
+			Expect(os.IsNotExist(err)).To(BeTrue())
 		})
 	})