Sync with latest cumulus and contracts pallet

[cmichi]

RandonmessCollectiveFlip was removed from the parachain template, there is no alternative for a source of randomness currently though. In the future the relay chain will provide one, I'll create a follow-up issue so that we don't forget about it.

[athei]

RandonmessCollectiveFlip was removed from the parachain template

How does the template even compile then. frame_system needs a source of randomness.

[cmichi]

@athei paritytech/cumulus#726

[athei]

It appears that I remembered that incorrectly. frame_system does not need Randomness. Only three pallets do and none of them is in the cumulus template.

So right now there is no way to get secure/unpredictable randomness for a parachain?

[HCastano]

I want to take a look before this gets merged 😃

Will do that later today

[cmichi]

So right now there is no way to get secure/unpredictable randomness for a parachain?

I talked to @bkchr and the relay chain will eventually provide randomness to the parachains, but that's not implemented yet. Right now we don't have an alternative.

[HCastano]

Two questions on some XCM configs. Also, have you tested this out using parachain-launch?

[HCastano]

Same question here

[cmichi]

So the configuration for canvas was the same as in the parachain-template and there this change was introduced (specifically here). EnsureOneOf has also been removed from Substrate and is no longer available.

Maybe @nukemandan or @riusricardo can clarify if applying this change for canvas is correct?

[HCastano]

So this change comes from @apopiak (see comment here). In our case, since we're planning to be a CGP I think we should leave it as it was before

[apopiak]

yep

[HCastano]

We need to revert the CollatorSelectionUpdateOrigin and we're good to merge