Add tests against Spring Data Snapshots

[rwinch]

trafficstars

This will help us detect problems like #380 earlier

[wilkinsona]

+1

FWIW, If you have an IO Platform Compability build that tests against 2.1, it'll show this failure.

[rwinch]

Thanks @wilkinsona I did get the error in CI (see https://build.spring.io/browse/LDAP-SIO-JOB1-697/log), but not until Spring IO was updated. Hopefully this will make it so we get the error before Spring Data updates

[rwinch]

PS: I should add that I think the other problem is the trigger was only done on commit rather than nightly also.

[wilkinsona]

Understood. The earlier we can catch this sort of thing the better. Perhaps Boot and the Platform should be more aggressive about adopting snapshots of dependencies that we're planning to update? I didn't update Boot to Hopper until its M1 had been released. With hindsight, that delay may not have been a good idea.

[rwinch]

@wilkinsona I would love to have the SNAPSHOT version of Platform to be updated as soon as possible!

I already run against Spring IO SNAPSHOT nightly (at least for most of my projects).This would have the benefit of find potential problems w/ other modules too.