Description of problem:
Having a task with sub-plans (i.e. errata bulk install task), task export lacks /has broken linking this task to the sub-plan tasks. Even taking:

foreman-rake foreman_tasks:export_tasks tasks=all

will generate task export with invalid URL in Sub plans.

The "Sub plans" tasks are collected by the task export, but one does not know which are triggered by the bulk task and which are not. Please add some relationship among the parent task and sub-plans / child tasks.


Version-Release number of selected component (if applicable):
ruby193-rubygem-foreman-tasks-0.6.15.7-1.el7sat.noarch


How reproducible:
100%


Steps to Reproduce:
1. Apply some errata to multiple hosts in one bulk action
2. take task export:
foreman-rake foreman_tasks:export_tasks tasks=all days=1

(remove "days=1" if necessary, this is just to shrink the task export tarball)

3. Open the task export on another machine and click to Actions::BulkAction task -> Run tab -> "Sub plans".
4. Open index.html and check if  Actions::Katello::System::Erratum::ApplicableErrataInstall tasks are present

Actual results:
3. link in "Sub plans" is broken.
4. the tasks are there, but no clear relationship to the Actions::BulkAction


Expected results:
3. The link to be working
4. Some clear relationship what  Actions::Katello::System::Erratum::ApplicableErrataInstall tasks are in the sub-plan and what are not (this information does not necessarily be present in the index.html).


Additional info: