Add binding for SamlConfig class to the Module

Change-Id: I63482d48a459db6d9cd75250b772cb85e0074407
diff --git a/src/main/java/com/googlesource/gerrit/plugins/saml/Module.java b/src/main/java/com/googlesource/gerrit/plugins/saml/Module.java
index 55aef92..a75bd72 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/saml/Module.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/saml/Module.java
@@ -30,6 +30,7 @@
 public class Module extends AbstractModule {
   @Override
   protected void configure() {
+    bind(SamlConfig.class);
     bind(SAML2Client.class).toProvider(SamlClientProvider.class);
   }