Add volume API/CLI

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

integration-cli/docker_utils.go

@@ -445,6 +445,40 @@ func deleteAllContainers() error {
 	return nil
 }
 
+func deleteAllVolumes() error {
+	volumes, err := getAllVolumes()
+	if err != nil {
+		return err
+	}
+	var errors []string
+	for _, v := range volumes {
+		status, b, err := sockRequest("DELETE", "/volumes/"+v.Name, nil)
+		if err != nil {
+			errors = append(errors, err.Error())
+			continue
+		}
+		if status != http.StatusNoContent {
+			errors = append(errors, fmt.Sprintf("error deleting volume %s: %s", v.Name, string(b)))
+		}
+	}
+	if len(errors) > 0 {
+		return fmt.Errorf(strings.Join(errors, "\n"))
+	}
+	return nil
+}
+
+func getAllVolumes() ([]*types.Volume, error) {
+	var volumes types.VolumesListResponse
+	_, b, err := sockRequest("GET", "/volumes", nil)
+	if err != nil {
+		return nil, err
+	}
+	if err := json.Unmarshal(b, &volumes); err != nil {
+		return nil, err
+	}
+	return volumes.Volumes, nil
+}
+
 var protectedImages = map[string]struct{}{}
 
 func init() {