OF-1092: POLICY_NOANONYMOUS property value must be a String

Although it evaluates as a boolean, the POLICY_NOANONYMOUS property value must
be a String value (as defined by javax.security.sasl.Sasl#POLICY_NOANONYMOUS)

src/java/org/jivesoftware/openfire/net/SASLAuthentication.java

@@ -230,7 +230,7 @@ public class SASLAuthentication {
                     // Construct the configuration properties
                     final Map<String, Object> props = new HashMap<>();
                     props.put( LocalClientSession.class.getCanonicalName(), session );
-                    props.put( Sasl.POLICY_NOANONYMOUS, !XMPPServer.getInstance().getIQAuthHandler().isAnonymousAllowed() );
+                    props.put( Sasl.POLICY_NOANONYMOUS, Boolean.toString( !XMPPServer.getInstance().getIQAuthHandler().isAnonymousAllowed() ) );
 
                     SaslServer saslServer = Sasl.createSaslServer( mechanismName, "xmpp", session.getServerName(), props, new XMPPCallbackHandler() );
                     if ( saslServer == null )

src/java/org/jivesoftware/openfire/sasl/SaslServerFactoryImpl.java

@@ -134,7 +134,7 @@ public class SaslServerFactoryImpl implements SaslServerFactory
         {
             if ( props != null )
             {
-                if ( mechanism.allowsAnonymous && props.containsKey( Sasl.POLICY_NOANONYMOUS ) && (Boolean) props.get( Sasl.POLICY_NOANONYMOUS ) )
+                if ( mechanism.allowsAnonymous && props.containsKey( Sasl.POLICY_NOANONYMOUS ) && Boolean.parseBoolean( (String) props.get( Sasl.POLICY_NOANONYMOUS ) ) )
                 {
                     // Do not include a mechanism that allows anonymous authentication when the 'no anonymous' policy is set.
                     continue;