Casting Exception when running as plugin

[dcrissman]

Related to: lightblue-platform/lightblue-rest#200

2016-02-04 11:15:14,953 [hystrix-FindCommand-97] ERROR [com.redhat.lightblue.util.Error] {"objectType":"error","context":"rest/FindCommand/migrationJob/find(migrationJob:null)/find","errorCode":"crud","msg":"com.redhat.lightblue.mongo.common.MongoDataStore cannot be cast to com.redhat.lightblue.mongo.common.MongoDataStore"}
2016-02-04 11:15:15,960 [hystrix-FindCommand-98] ERROR [com.redhat.lightblue.mongo.crud.MongoCRUDController] Error during find:: java.lang.ClassCastException: com.redhat.lightblue.mongo.common.MongoDataStore cannot be cast to com.redhat.lightblue.mongo.common.MongoDataStore
at com.redhat.lightblue.mongo.crud.MongoCRUDController.find(MongoCRUDController.java:342)
at com.redhat.lightblue.mediator.SimpleFindImpl.find(SimpleFindImpl.java:52)
at com.redhat.lightblue.mediator.Mediator.find(Mediator.java:449)
at com.redhat.lightblue.rest.crud.hystrix.FindCommand.run(FindCommand.java:77)
at com.redhat.lightblue.rest.crud.hystrix.FindCommand.run(FindCommand.java:36)
at com.netflix.hystrix.HystrixCommand$1.call(HystrixCommand.java:294)
at com.netflix.hystrix.HystrixCommand$1.call(HystrixCommand.java:289)
at rx.Observable$1.call(Observable.java:144)
at rx.Observable$1.call(Observable.java:136)
at rx.Observable$1.call(Observable.java:144)
at rx.Observable$1.call(Observable.java:136)
at rx.Observable$1.call(Observable.java:144)
at rx.Observable$1.call(Observable.java:136)
at rx.Observable.unsafeSubscribe(Observable.java:7466)
at com.netflix.hystrix.AbstractCommand$5.call(AbstractCommand.java:534)
at com.netflix.hystrix.AbstractCommand$5.call(AbstractCommand.java:509)
at rx.Observable.unsafeSubscribe(Observable.java:7466)
at rx.internal.operators.OperatorSubscribeOn$1$1.call(OperatorSubscribeOn.java:62)
at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:56)
at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:47)
at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction.call(HystrixContexSchedulerAction.java:69)
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:47)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)