Camel-velocity deprecation warnings

Issue

• camel-velocity component throws deprecation warnings;
• WARN org.apache.velocity.deprecation - configuration key 'class.resource.loader.class' has been deprecated in favor of 'resource.loader.class.class'.class';
• WARN org.apache.velocity.deprecation - configuration key 'resource.loader' has been deprecated in favor of 'resource.loaders';
• WARN org.apache.velocity.deprecation - configuration key 'class.resource.loader.description' has been deprecated in favor of 'resource.loader.class.description'.