IIRC java script API from JDK doesn't work well in OSGi container, so that we should use Servicemix wrapped scripting spec bundle
Apache ServiceMix :: Specs :: Scripting API 1.0 (2.3.0.redhat-610379)
ensure you installed this bundle.
There has been some people on the Apache Camel forum with that issue too.
I think there is some OSGi issues with Hazelcast 3.2.x. You can use the older 3.0.3 which works in OSGi.
Still same exception. No luck with hazelcast 3.0.3 also.
Try install using the camel-hazelcast feature which ought to install what you need.