Fix CVE-2020-29652 and CVE-2020-26160 (#4274)

Bump up restic to v0.12.1 to fix CVE-2020-26160.
Bump up module "github.com/vmware-tanzu/crash-diagnostics" to v0.3.7 to fix CVE-2020-29652.
The "github.com/vmware-tanzu/crash-diagnostics" updates client-go to v0.22.2 which introduces several break changes, this commit updates the related codes as well

Signed-off-by: Wenkai Yin(尹文开) <yinw@vmware.com>

pkg/plugin/clientmgmt/logrus_adapter.go

@@ -18,6 +18,7 @@ package clientmgmt
 
 import (
 	"fmt"
+	"io"
 	"log"
 
 	hclog "github.com/hashicorp/go-hclog"
@@ -162,3 +163,37 @@ func (l *logrusAdapter) StandardLogger(opts *hclog.StandardLoggerOptions) *log.L
 func (l *logrusAdapter) SetLevel(_ hclog.Level) {
 	return
 }
+
+// ImpliedArgs returns With key/value pairs
+func (l *logrusAdapter) ImpliedArgs() []interface{} {
+	panic("not implemented")
+}
+
+// Args are alternating key, val pairs
+// keys must be strings
+// vals can be any type, but display is implementation specific
+// Emit a message and key/value pairs at a provided log level
+func (l *logrusAdapter) Log(level hclog.Level, msg string, args ...interface{}) {
+	switch level {
+	case hclog.Trace:
+		l.Trace(msg, args...)
+	case hclog.Debug:
+		l.Debug(msg, args...)
+	case hclog.Info:
+		l.Info(msg, args...)
+	case hclog.Warn:
+		l.Warn(msg, args...)
+	case hclog.Error:
+		l.Error(msg, args...)
+	}
+}
+
+// Returns the Name of the logger
+func (l *logrusAdapter) Name() string {
+	return l.name
+}
+
+// Return a value that conforms to io.Writer, which can be passed into log.SetOutput()
+func (l *logrusAdapter) StandardWriter(opts *hclog.StandardLoggerOptions) io.Writer {
+	panic("not implemented")
+}