Wmcore

- Massive monitoring rewrite.
- Improve the performance of the ErrorHandler when loading jobs that have
input files with large numbers of lumi sections. Fixes 3925.
- Make loading parentage information when loading files in a fileset optional. Fixes 3919.
- Load the task name in the LoadFromIDWithWorkflow DAO. Fixes 3922.
- Strip error message from GWQ to 1000 characters
- Log traceback for workqueue split errors if unknown exception
- Complain if no acdc section in resubmission task.

- Remove dependency on deprecated method xml..getchildren (Todor Ivanov) 11984

- Previous build failed while checking the package hash. Retrigger it.

- Add WMCore.ReqMgr.Tools dependency for wmagent pypi package. (Todor Ivanov) 11983

- WMAgent stable release