use WorkItemPlanner as a way to do approvals?

[jstrachan]

we'd need a workItemPlannerApprove() function we could use in pipelines - along with maybe a configuration option on the fabric8-pipelines ConfigMap to know if we should use planner or stick with jenkins approvals on a per project basis.

Then the workItemPlannerApprove() step would create a new WIT issue for the current BuildConfig namespace + name + space; with the build number (Build.name) and wait for it to be approved using however many +1s as required using RBAC and whatnot; then when the issue is approved/closed the workItemPlannerApprove() would continue. So like the default jenkins approval step; just reusing WIT