[midPoint-git] [Evolveum/midpoint] b0cbf6: Fix lightweight subtasks leakage (MID-5227)

[mederly]

  Branch: refs/heads/master
  Home:   https://github.com/Evolveum/midpoint
  Commit: b0cbf6a324d50462b89ab7f2c50f5a6dda47c007
      https://github.com/Evolveum/midpoint/commit/b0cbf6a324d50462b89ab7f2c50f5a6dda47c007
  Author: Pavol Mederly <mederly at evolveum.com>
  Date:   2019-04-09 (Tue, 09 Apr 2019)

  Changed paths:
    A model/model-intest/src/test/java/com/evolveum/midpoint/model/intest/TestIterativeTasks.java
    A model/model-intest/src/test/resources/iterative-tasks/task-buckets-multithreaded.xml
    M repo/repo-common/src/main/java/com/evolveum/midpoint/repo/common/task/AbstractSearchIterativeResultHandler.java
    M repo/task-api/src/main/java/com/evolveum/midpoint/task/api/RunningTask.java
    M repo/task-quartz-impl/src/main/java/com/evolveum/midpoint/task/quartzimpl/RunningTaskQuartzImpl.java
    M repo/task-quartz-impl/src/main/java/com/evolveum/midpoint/task/quartzimpl/TaskManagerQuartzImpl.java

  Log Message:
  -----------
  Fix lightweight subtasks leakage (MID-5227)

In scenarios with buckets and worker threads the number of lightweight
subtasks grew indefinitely. This commit also fixes CMEs occurring during
lightweight task startup.