ANY/ALL convergence setting doesn't save sometimes for approval nodes

[jakemcdermott]

ISSUE TYPE

• Bug Report

STEPS TO REPRODUCE

• Create and save workflow that looks like this:
  
• Open the workflow visualizer for the workflow, change the convergence setting of the approval node to ALL and save.

EXPECTED RESULTS

• The new convergence setting should save and the approval node should now have an ALL tag.
• There should be api requests in the console log showing that the updated convergence values were sent to the API by the browser.

ACTUAL RESULTS

• The convergence setting doesn't save
• No requests in the browser console logs showing the updated convergence setting.

ADDITIONAL INFORMATION

Interestingly, the topology of the workflow seems to be a factor. if you create a workflow that looks like this:

The approval node's convergence setting can be updated as expected.

[kdelee]

@dsesami @unlikelyzero @shebangbash this one is hanging out from a while back, should be easy as we already verified it for the tower patch release

[unlikelyzero]

@kdelee i'll take non-4.0 tasks. Feel free to @ or assign me directly

[unlikelyzero]

https://github.com/ansible/tower-qa/issues/5211