Enforce metadata_stradegy as extended

[bgruening]

set metadata_strategy to be 'extended' on a global level.

This will fix #369

The next step would be to clean the destination ... but this is optional.

[mira-miracoli]

Can it be closed?

[bgruening]

I think we should still do this. This should be the default and if needed we should opt-out.

[kysrpex]

At the moment, we are enforcing this through TPV in tool_defaults.yml. Since our only destinations on the job conf are local and tpv_dispatcher, I guess it makes sense to enable this on a global level.

What do you think?

[kysrpex]

Looking at destinations.yml.j2, Pulsar seems to require metadata_strategy: directory. Do we know if switching to a global setting would still keep the TPV override effective.

Again the TPV dry-run failure is normal and expected. The dry-run fails for the default tool because mock tools have no version.