MM-28882:ignore guest ldap sync (#15936)

* add ignoreGuestsLdapSync to config, update interface

* update interface

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/config.go

@@ -2194,6 +2194,7 @@ type SamlSettings struct {
 	Enable                        *bool `access:"authentication"`
 	EnableSyncWithLdap            *bool `access:"authentication"`
 	EnableSyncWithLdapIncludeAuth *bool `access:"authentication"`
+	IgnoreGuestsLdapSync          *bool `access:"authentication"`
 
 	Verify      *bool `access:"authentication"`
 	Encrypt     *bool `access:"authentication"`
@@ -2248,6 +2249,10 @@ func (s *SamlSettings) SetDefaults() {
 		s.EnableSyncWithLdapIncludeAuth = NewBool(false)
 	}
 
+	if s.IgnoreGuestsLdapSync == nil {
+		s.IgnoreGuestsLdapSync = NewBool(false)
+	}
+
 	if s.EnableAdminAttribute == nil {
 		s.EnableAdminAttribute = NewBool(false)
 	}