Update role data and resource to use go sdk (#228)

* Update role data and resource to use go sdk

* format time strings

* string to custom type

* more time format strings

* one more custom type

* remove roles from REST client

* permissions data source too because sure why not

* nil check for permission parent slug

Author: Alexis Jasso

firehydrant/client.go

@@ -70,8 +70,6 @@ type Client interface {
 	// Signals
 	IngestURL() IngestURLClient
 	Transposers() TransposersClient
-	Roles() Roles
-	Permissions() Permissions
 }
 
 type transportWithUserAgent struct {
@@ -216,14 +214,6 @@ func (c *APIClient) StatusUpdateTemplates() StatusUpdateTemplates {
 	return &RESTStatusUpdateTemplateClient{client: c}
 }
 
-func (c *APIClient) Roles() Roles {
-	return &RESTRolesClient{client: c}
-}
-
-func (c *APIClient) Permissions() Permissions {
-	return &RESTPermissionsClient{client: c}
-}
-
 // GetUsers gets matching users in FireHydrant
 func (c *APIClient) GetUsers(ctx context.Context, params GetUserParams) (*UserResponse, error) {
 	userResponse := &UserResponse{}