Various nits and alignments for SP runtimes #393

Job	Run time
Extract tasks from matrix	5s
check-migrations (polkadot, polkadot-runtime, relay/polkadot, wss://polkadot-try-runtime-node.par...	19m 36s
check-migrations (kusama, staging-kusama-runtime, relay/kusama, wss://kusama-try-runtime-node.par...	17m 37s
check-migrations (asset-hub-kusama, asset-hub-kusama-runtime, system-parachains/asset-hubs/asset-...	15m 56s
check-migrations (asset-hub-polkadot, asset-hub-polkadot-runtime, system-parachains/asset-hubs/as...	15m 8s
check-migrations (bridge-hub-kusama, bridge-hub-kusama-runtime, system-parachains/bridge-hubs/bri...	14m 30s
check-migrations (bridge-hub-polkadot, bridge-hub-polkadot-runtime, system-parachains/bridge-hubs...	14m 9s
check-migrations (collectives-polkadot, collectives-polkadot-runtime, system-parachains/collectiv...	15m 5s
check-migrations (encointer-kusama, encointer-kusama-runtime, system-parachains/encointer, wss://...	14m 19s
	2h 6m 25s

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