[midPoint-git] [Evolveum/midpoint] bfdd31: Fix async update activity

[mederly]

  Branch: refs/heads/master
  Home:   https://github.com/Evolveum/midpoint
  Commit: bfdd31888d3de638540c715d7bd96b4b707e6f7c
      https://github.com/Evolveum/midpoint/commit/bfdd31888d3de638540c715d7bd96b4b707e6f7c
  Author: Pavol Mederly <mederly at evolveum.com>
  Date:   2021-11-24 (Wed, 24 Nov 2021)

  Changed paths:
    M infra/schema/src/main/java/com/evolveum/midpoint/schema/util/task/work/WorkDefinitionUtil.java
    M model/model-intest/pom.xml
    M model/model-intest/src/test/resources/async/grouper-amqp091/task-async-update.xml
    M model/model-intest/src/test/resources/async/task/task-async-update-hr-no-workers.xml
    M model/model-intest/src/test/resources/async/task/task-async-update-hr-one-worker.xml
    M model/model-intest/src/test/resources/async/ucf/task-async-update.xml
    M provisioning/ucf-impl-builtin/src/main/java/com/evolveum/midpoint/provisioning/ucf/impl/builtin/async/update/sources/Amqp091AsyncUpdateSource.java

  Log Message:
  -----------
  Fix async update activity

Two fixes here:
- added forgotten code to parse async update activity definition,
- fix a NPE that was not relevant to production, only to test code.

Also, migrated a couple of async update tasks to activity syntax.