Add missing mappers for CronOverlapPolicy and ActiveCluster

[timl3136]

What changed?
Add missing mappers for CronOverlapPolicy and ActiveCluster

Why?
Mappers missing

How did you test it?
Unit tests

Potential risks

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.32%. Comparing base (97eba63) to head (b0fd303).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Coverage Δ
internal/internal_workflow.go	81.74% <ø> (ø)

... and 2 files with indirect coverage changes

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