Revert "update to use containerd seccomp package"

This reverts commit 4f8e065faf055d3f0463a92622297ca3afac07f4.

vendor/github.com/genuinetools/reg/clair/clair.go

@@ -0,0 +1,76 @@
+package clair
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+)
+
+// Clair defines the client for retriving information from the clair API.
+type Clair struct {
+	URL    string
+	Client *http.Client
+	Logf   LogfCallback
+}
+
+// LogfCallback is the callback for formatting logs.
+type LogfCallback func(format string, args ...interface{})
+
+// Quiet discards logs silently.
+func Quiet(format string, args ...interface{}) {}
+
+// Log passes log messages to the logging package.
+func Log(format string, args ...interface{}) {
+	log.Printf(format, args...)
+}
+
+// New creates a new Clair struct with the given URL and credentials.
+func New(url string, debug bool) (*Clair, error) {
+	transport := http.DefaultTransport
+
+	errorTransport := &ErrorTransport{
+		Transport: transport,
+	}
+
+	// set the logging
+	logf := Quiet
+	if debug {
+		logf = Log
+	}
+
+	registry := &Clair{
+		URL: url,
+		Client: &http.Client{
+			Timeout:   5 * time.Minute,
+			Transport: errorTransport,
+		},
+		Logf: logf,
+	}
+
+	return registry, nil
+}
+
+// url returns a clair URL with the passed arguements concatenated.
+func (c *Clair) url(pathTemplate string, args ...interface{}) string {
+	pathSuffix := fmt.Sprintf(pathTemplate, args...)
+	url := fmt.Sprintf("%s%s", c.URL, pathSuffix)
+	return url
+}
+
+func (c *Clair) getJSON(url string, response interface{}) (http.Header, error) {
+	resp, err := c.Client.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	c.Logf("clair.clair resp.Status=%s", resp.Status)
+
+	if err := json.NewDecoder(resp.Body).Decode(response); err != nil {
+		c.Logf("clair.clair resp.Status=%s, body=%s", resp.Status, response)
+		return nil, err
+	}
+
+	return resp.Header, nil
+}