feat(auth-ldap): support strategyOptions from static config

CHANGELOG.unreleased.md

@@ -10,6 +10,7 @@
 - [VDI migration]
   - Remove 'Migrate all VDIs' checkbox (PR [#4876](https://github.com/vatesfr/xen-orchestra/pull/4876))
   - [VM/disks]: Add bulk migration (PR [#4877](https://github.com/vatesfr/xen-orchestra/pull/4877))
+- [SAML] Possibility to pass [settings to the underlying library](https://github.com/bergie/passport-saml#config-parameter-details) via the `plugins.auth-saml.strategyOptions` section in `xo-server`'s configuration file
 
 ### Bug fixes
 
@@ -25,6 +26,7 @@
 >
 > Rule of thumb: add packages on top.
 
+- xo-server-saml minor
 - xo-server-audit minor
 - xo-server minor
 - xo-web minor

packages/xo-server-auth-saml/src/index.js

@@ -47,8 +47,9 @@ You should try \`http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddr
 // ===================================================================
 
 class AuthSamlXoPlugin {
-  constructor({ xo }) {
+  constructor({ staticConfig, xo }) {
     this._conf = null
+    this._strategyOptions = staticConfig.strategyOptions
     this._unregisterPassportStrategy = undefined
     this._usernameField = null
     this._xo = xo
@@ -57,6 +58,7 @@ class AuthSamlXoPlugin {
   async configure({ usernameField, ...conf }, { loaded }) {
     this._usernameField = usernameField
     this._conf = {
+      ...this._strategyOptions,
       ...DEFAULTS,
       ...conf,