[JIRAALIGN-1401] Work in Process by State > Lean Metrics > Lead Time utilizes incorrect formulas for Epics

Issue Summary

Work in Process by State > Lean Metrics > Lead Time utilizes incorrect formulas for Epics

Steps to Reproduce

1. Work in Process by State > Lean Metrics > Lead Time
2. View the Lead Time graph for Epics

Expected Results

The Epic view of Lead Time should be a rolling history of the average time it takes for all Epics in a PI to be accepted/done. The 'clock' starts when the item is created and ends when it moves accepted/done (plus 1 day).

For example, if the item was created on July 7 and moves to done on July 9, the lead time July 9 - July 7 + 1 = 2 + 1 = 3 days.

Actual Results

The Epic view utilizes the story calculations

Workaround

No workaround at this time. A workaround will be published if one is found.