vendor: update all dependencies

vendor/google.golang.org/api/serviceuser/v1/serviceuser-api.json

@@ -256,7 +256,7 @@
       }
     }
   },
-  "revision": "20180330",
+  "revision": "20180525",
   "rootUrl": "https://serviceuser.googleapis.com/",
   "schemas": {
     "Api": {
@@ -382,10 +382,6 @@
           "description": "If true, the service accepts API keys without any other credential.",
           "type": "boolean"
         },
-        "customAuth": {
-          "$ref": "CustomAuthRequirements",
-          "description": "Configuration for custom authentication."
-        },
         "oauth": {
           "$ref": "OAuthRequirements",
           "description": "The requirements for OAuth credentials."
@@ -550,17 +546,6 @@
       },
       "type": "object"
     },
-    "CustomAuthRequirements": {
-      "description": "Configuration for a custom authentication provider.",
-      "id": "CustomAuthRequirements",
-      "properties": {
-        "provider": {
-          "description": "A configuration string containing connection information for the\nauthentication provider, typically formatted as a SmartService string\n(go/smartservice).",
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
     "CustomError": {
       "description": "Customize service error responses.  For example, list any service\nspecific protobuf types that can appear in error detail lists of\nerror responses.\n\nExample:\n\n    custom_error:\n      types:\n      - google.foo.v1.CustomError\n      - google.foo.v1.AnotherError",
       "id": "CustomError",

vendor/google.golang.org/api/serviceuser/v1/serviceuser-gen.go

@@ -432,9 +432,6 @@ type AuthenticationRule struct {
 	// any other credential.
 	AllowWithoutCredential bool `json:"allowWithoutCredential,omitempty"`
 
-	// CustomAuth: Configuration for custom authentication.
-	CustomAuth *CustomAuthRequirements `json:"customAuth,omitempty"`
-
 	// Oauth: The requirements for OAuth credentials.
 	Oauth *OAuthRequirements `json:"oauth,omitempty"`
 
@@ -861,39 +858,6 @@ func (s *Control) MarshalJSON() ([]byte, error) {
 	return gensupport.MarshalJSON(raw, s.ForceSendFields, s.NullFields)
 }
 
-// CustomAuthRequirements: Configuration for a custom authentication
-// provider.
-type CustomAuthRequirements struct {
-	// Provider: A configuration string containing connection information
-	// for the
-	// authentication provider, typically formatted as a SmartService
-	// string
-	// (go/smartservice).
-	Provider string `json:"provider,omitempty"`
-
-	// ForceSendFields is a list of field names (e.g. "Provider") to
-	// unconditionally include in API requests. By default, fields with
-	// empty values are omitted from API requests. However, any non-pointer,
-	// non-interface field appearing in ForceSendFields will be sent to the
-	// server regardless of whether the field is empty or not. This may be
-	// used to include empty fields in Patch requests.
-	ForceSendFields []string `json:"-"`
-
-	// NullFields is a list of field names (e.g. "Provider") to include in
-	// API requests with the JSON null value. By default, fields with empty
-	// values are omitted from API requests. However, any field with an
-	// empty value appearing in NullFields will be sent to the server as
-	// null. It is an error if a field in this list has a non-empty value.
-	// This may be used to include null fields in Patch requests.
-	NullFields []string `json:"-"`
-}
-
-func (s *CustomAuthRequirements) MarshalJSON() ([]byte, error) {
-	type NoMethod CustomAuthRequirements
-	raw := NoMethod(*s)
-	return gensupport.MarshalJSON(raw, s.ForceSendFields, s.NullFields)
-}
-
 // CustomError: Customize service error responses.  For example, list
 // any service
 // specific protobuf types that can appear in error detail lists