Fix User entity for serialization.
Fix User entity for serialization.

Implement Serializable interface. Change transient fields to non-transient to be included in JDK serialization. Add @Transient to exclude from JPA serialization.

pivotalsoftware/pivotal-cla,pivotalsoftware/pivotal-cla,pivotalsoftware/pivotal-cla,pivotalsoftware/pivotal-cla