Added exportation from api/v2/constructed_inventories endpoint.

[ivarmu]

What does this PR do?

• Add exportation from api/v2/constructed_inventories endpoint.
• Add exportation for the smart inventories.

How should this be tested?

Manually tested. Automatic tests as well.

Is there a relevant Issue open for this?

N/A

Other Relevant info, PRs, etc

N/A

[sean-m-sullivan]

looks good, need to be updated with base branch and a changelog fragment

[silvinux]

LGTM!

[djdanielsson]

if we could fix the lint errors that would be great, not sure if you just need to ignore that file or why it is even linting a .py file honestly.

[ivarmu]

if we could fix the lint errors that would be great, not sure if you just need to ignore that file or why it is even linting a .py file honestly.

I'm fixing a lot of linter errors at #707 ... will try to rebase this one when the #707 is merged. In particular, I've added a .ansible-lint-ignore file to avoid these .py files to be ansible-linted.

[sean-m-sullivan]

With the other PR merged, can you rebase it, make sure it passes tests with the changes, otherwise looks good