Running task type enumeration.

enum _PRL_RUNNING_TASK_TYPE_ENUM {
  RTT_RUNNING_TASK_UNKNOWN = 0,
  RTT_RUNNING_TASK_CREATE_VM = 1,
  RTT_RUNNING_TASK_REGISTER_VM = 2,
  RTT_RUNNING_TASK_CLONE_VM = 3,
  RTT_RUNNING_TASK_DELETE_VM = 4,
  RTT_RUNNING_TASK_UNREG_VM = 5,
  RTT_RUNNING_TASK_CREATE_IMAGE = 6,
  RTT_RUNNING_TASK_RESTORE_VM = 7
};