[midPoint-git] [Evolveum/midpoint] 977fcf: Do not write incomplete report output on suspend

[mederly]

  Branch: refs/heads/tmp/fixes-after-4.5
  Home:   https://github.com/Evolveum/midpoint
  Commit: 977fcf3be104bb390df705fe359eb82d9b072fda
      https://github.com/Evolveum/midpoint/commit/977fcf3be104bb390df705fe359eb82d9b072fda
  Author: Pavol Mederly <mederly at evolveum.com>
  Date:   2022-04-06 (Wed, 06 Apr 2022)

  Changed paths:
    M model/report-impl/src/main/java/com/evolveum/midpoint/report/impl/activity/SaveReportFileSupport.java
    M model/report-impl/src/main/java/com/evolveum/midpoint/report/impl/controller/CollectionDistributedExportController.java

  Log Message:
  -----------
  Do not write incomplete report output on suspend

When the task goes down, we must not write incomplete (partial) data
to the report output file.

Work in progress: This solves the problem for classical reports.
What remains are the distributed reports. (They may be safe, but it
needs to be verified.)

Related to MID-7839.