Fix Collective <-> Elections initialization. (#5454)

* A patch

* Fix

* Better approach.

* Fix grumbles

substrate/bin/node/testing/src/genesis.rs

@@ -109,6 +109,7 @@ pub fn config_endowed(
 		pallet_collective_Instance1: Some(Default::default()),
 		pallet_collective_Instance2: Some(Default::default()),
 		pallet_membership_Instance1: Some(Default::default()),
+		pallet_elections_phragmen: Some(Default::default()),
 		pallet_sudo: Some(Default::default()),
 		pallet_treasury: Some(Default::default()),
 		pallet_society: Some(SocietyConfig {