Added pipelines for monitoring seems to duplicate themselves

[smlambert]

Had not seen this behaviour before, but happening since the addition of the new release pipelines, that when you add the pipeline to be monitored, at some point after its starts pulling data from the Jenkins server, it ends up showing up more than once in the monitoring admin view (even though it has not been manually added more than once).

When you try to edit or delve one of the entries from the admin view, it appears that the duplicates represent the same entries in the DB, and will get errors saying as much.

Not sure how many times a pipeline will end up showing up in this view, see that jdk8 pipeline is now 4x (and 11/17 2x), since being added yesterday, so we should figure out what is triggering this behaviour.

[llxia]

I have cleaned up duplicate URLs on the monitor page. It does not resolve the problem. We still need to investigate this issue and fix it.