Revert functionality that shouldn't have been in the spec: missed a test.

command/agent/config/config_test.go

@@ -140,6 +140,9 @@ func TestLoadConfigFile(t *testing.T) {
 					Name:    "auto",
 					Type:    "file",
 					WrapTTL: 5 * time.Minute,
+					Config: map[string]interface{}{
+						"path": "/tmp/file-baz",
+					},
 				},
 			},
 		},

command/agent/config/test-fixtures/config-embedded-type.hcl

@@ -35,5 +35,8 @@ auto_auth {
         name = "auto"
         type = "file"
         wrap_ttl = "5m"
+		config = {
+			path = "/tmp/file-baz"
+		}
     }
 }

command/agent/config/test-fixtures/config.hcl

@@ -37,5 +37,8 @@ auto_auth {
 		name = "auto"
 		type = "file"
 		wrap_ttl = "5m"
+		config = {
+			path = "/tmp/file-baz"
+		}
 	}
 }