chore: move deprecated flow to template

[squakez]

This PR span over all the list of Kamelets as we've deprecated since a while .spec.flow parameter in favour of .spec.template. apache/camel-k#2932 will remove it from next camel-k spec (1.9), so we must apply this change before that PR is merged as well.

[squakez]

By the way, I'm not sure if there is any other documentation, apart the autogenerated one from the same sources.

[squakez]

The validation is failing #751. Will need to fix it along this PR.

[djencks]

At least https://camel.apache.org/camel-k/next/kamelets/kamelets-dev.html has flow in the samples. I didn't look in your other PRs, I'll plan to fix this if you haven't.
... I see you already fixed this in the camel-k PR.

[oscerd]

One thing we could do is pointing the camel dependencies to 3.15.0-SNAPSHOT in library and everywhere else on main branch, otherwise this may create confusion

[oscerd]

Let's merge this one for beginning.

[oscerd]

Sorry I had to revert. We have multiple place where we need to address this:

• the catalog is using the camel-k extension from fabric8 kubernetes-client and there is no trace of spec.template directly there
• the validator needs to point to an updated model for camel-k crd etc. and still we cannot use it
• in this situation test on catalog will fail, validation will fail etc.
• We could leave the PR open @squakez and wait for a more stable situation for updating main here, can you place create a new PR? Thanks and sorry

[squakez]

No problem. I was planning to close it anyway or rebase after #751 is fixed.