[v11.0.x] samlsettings: api integration (#86109)

samlsettings: api integration (#84300)

* add strategy and tests

* use settings provider service and remove multiple providers strategy

* Move SAML strategy to ssosettings service

* Update codeowners file

* reload from settings provider

* add saml as configurable provider

* Add new SAML strategy

* rename old saml settings interface

* update saml string references

* use OSS license

* validate saml provider depends on license for List

* add tests for list rendering including saml

* change the licensing validation to service init

* replace service struct for provider

(cherry picked from commit fc205db466)

Co-authored-by: linoman <2051016+linoman@users.noreply.github.com>

pkg/setting/provider.go

@@ -85,11 +85,11 @@ type KeyValue interface {
 // service that have support for configuration reloads.
 type ReloadHandler interface {
 	// Reload handles reloading of configuration changes.
-	Reload(section Section) error
+	ReloadSection(section Section) error
 
 	// Validate validates the configuration, if the validation
 	// fails the configuration will not be updated neither reloaded.
-	Validate(section Section) error
+	ValidateSection(section Section) error
 }
 
 type SettingsBag map[string]map[string]string