Amend chainspecs for `people-westend` and add IBP bootnodes (#4072)
Dear team, dear @NachoPal @joepetrowski @bkchr @ggwpez , This is a retry of #3957, after merging master as advised!, Many thanks! **_Milos_** --------- Signed-off-by: Oliver Tale-Yazdi <[email protected]> Co-authored-by: Oliver Tale-Yazdi <[email protected]>