test: add ListRetries config parameter to integration tests

Occasionally the b2 tests fail because the integration tests don't
retry hard enough with their new setting of -list-retries 3. Override
this setting to 5 for the b2 tests only.

fstest/test_all/config.go

@@ -36,6 +36,7 @@ type Backend struct {
 	CleanUp     bool     // when running clean, run cleanup first
 	Ignore      []string // test names to ignore the failure of
 	Tests       []string // paths of tests to run, blank for all
+	ListRetries int      // -list-retries if > 0
 }
 
 // includeTest returns true if this backend should be included in this
@@ -89,6 +90,7 @@ func (b *Backend) MakeRuns(t *Test) (runs []*Run) {
 			NoBinary:    t.NoBinary,
 			SizeLimit:   int64(maxSize),
 			Ignore:      ignore,
+			ListRetries: b.ListRetries,
 		}
 		if t.AddBackend {
 			run.Path = path.Join(run.Path, b.Backend)

fstest/test_all/config.yaml

@@ -20,6 +20,7 @@ backends:
  - backend:  "b2"
    remote:   "TestB2:"
    fastlist: true
+   listretries: 5
  - backend:  "crypt"
    remote:   "TestCryptDrive:"
    fastlist: true

fstest/test_all/run.go

@@ -45,6 +45,7 @@ type Run struct {
 	NoBinary    bool   // set to not build a binary
 	SizeLimit   int64  // maximum test file size
 	Ignore      map[string]struct{}
+	ListRetries int // -list-retries if > 0
 	// Internals
 	CmdLine     []string
 	CmdString   string
@@ -336,8 +337,12 @@ func (r *Run) Init() {
 		r.CmdLine = []string{"./" + r.BinaryName()}
 	}
 	r.CmdLine = append(r.CmdLine, prefix+"v", prefix+"timeout", timeout.String(), "-remote", r.Remote)
-	if *listRetries > 0 {
-		r.CmdLine = append(r.CmdLine, "-list-retries", fmt.Sprint(*listRetries))
+	listRetries := *listRetries
+	if r.ListRetries > 0 {
+		listRetries = r.ListRetries
+	}
+	if listRetries > 0 {
+		r.CmdLine = append(r.CmdLine, "-list-retries", fmt.Sprint(listRetries))
 	}
 	r.Try = 1
 	if *verbose {