Add path to Keystore (#10152)

* Add failing test

* Add path to keystore

* Assert encoded contains "path"

* Fix lint

Ran `bazel run //:gazelle -- fix`

Co-authored-by: james-prysm <90280386+james-prysm@users.noreply.github.com>

validator/keymanager/BUILD.bazel

@@ -27,6 +27,8 @@ go_test(
     srcs = ["types_test.go"],
     deps = [
         ":go_default_library",
+        "//testing/assert:go_default_library",
+        "//testing/require:go_default_library",
         "//validator/keymanager/derived:go_default_library",
         "//validator/keymanager/local:go_default_library",
         "//validator/keymanager/remote:go_default_library",

validator/keymanager/types.go

@@ -59,6 +59,7 @@ type Keystore struct {
 	Pubkey  string                 `json:"pubkey"`
 	Version uint                   `json:"version"`
 	Name    string                 `json:"name"`
+	Path    string                 `json:"path"`
 }
 
 // Kind defines an enum for either local, derived, or remote-signing

validator/keymanager/types_test.go

@@ -1,6 +1,12 @@
 package keymanager_test
 
 import (
+	"encoding/json"
+	"strings"
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/testing/assert"
+	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/validator/keymanager"
 	"github.com/prysmaticlabs/prysm/validator/keymanager/derived"
 	"github.com/prysmaticlabs/prysm/validator/keymanager/local"
@@ -20,3 +26,11 @@ var (
 	_ = keymanager.Deleter(&local.Keymanager{})
 	_ = keymanager.Deleter(&derived.Keymanager{})
 )
+
+func TestKeystoreContainsPath(t *testing.T) {
+	keystore := keymanager.Keystore{}
+	encoded, err := json.Marshal(keystore)
+
+	require.NoError(t, err, "Unexpected error marshalling keystore")
+	assert.Equal(t, true, strings.Contains(string(encoded), "path"))
+}