Enable resource reference feature by default

[lblackstone]

Unless the PULUMI_DISABLE_RESOURCE_REFERENCES flag
is explicitly set to a truthy value, the resource reference feature is now
enabled by default.

Fix #5838

[justinvp]

@lblackstone, I have a WIP change that turns on resource references end-to-end for Node and Python 06ec7d6. I need to update that commit to do 2 things: 1) instead of hardcoding those to true, only set it to true if PULUMI_EXPERIMENTAL_RESOURCE_REFERENCES is set and 2) also set these in the .NET and Go SDKs. I was hoping we could then kick off another cron run of the examples repo with these changes. And if that looks good, then flip all the places where PULUMI_EXPERIMENTAL_RESOURCE_REFERENCES is used to use PULUMI_DISABLE_RESOURCE_REFERENCES.

[justinvp]

And if that looks good, then flip all the places where PULUMI_EXPERIMENTAL_RESOURCE_REFERENCES is used to use PULUMI_DISABLE_RESOURCE_REFERENCES.

I opened #5908 but decided to just skip ahead to turning it on in the SDKs by default with PULUMI_DISABLE_RESOURCE_REFERENCES to opt-out. So that PR now depends on this PR. Wondering if we should just pull the commit from that PR into this PR, so we can merge the changes as a single commit into master? @lblackstone, @pgavlin, what do you think?

[pgavlin]

Wondering if we should just pull the commit from that PR into this PR, so we can merge the changes as a single commit into master? @lblackstone, @pgavlin, what do you think?

That sounds good to me.

[justinvp]

@lblackstone, your commit LGTM.

[justinvp]

Is there a good way to get some more validation on this in examples repo, now that it'll be enabled in the SDKs as well? If we merge this in master and kick off the cron job in examples repo, will it use the dev builds of the SDKs?

[lblackstone]

Is there a good way to get some more validation on this in examples repo, now that it'll be enabled in the SDKs as well? If we merge this in master and kick off the cron job in examples repo, will it use the dev builds of the SDKs?

@stack72 Do you know the answer to this?

[pgavlin]

If we merge this in master and kick off the cron job in examples repo, will it use the dev builds of the SDKs?

IIRC the answer is yes.