AWS - bucket not required in form for s3query and s3out

[jeanmichel-nwsb]

"Amazon S3" and "Amazon S3 Out" nodes support providing the bucket property through the incoming message.
However the HTML form specify the property as required which creates a warning on deploy.

PR provided as discussed on the forum : https://discourse.nodered.org/t/node-red-node-aws-html-form-state-bucket-is-required-which-prevent-providing-from-msg/71165

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Proposed changes

By changing the descriptor of the bucket property in the form, the warning disapear.

Checklist

• I have read the contribution guidelines
• For non-bugfix PRs, I have discussed this change on the forum/slack team.
• I have run grunt to verify the unit tests pass
• I have added suitable unit tests to cover the new/changed functionality

Test has been performed on a local node-red instance. No unit tests were applied as I don't know how to run them.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: jeanmichel-nwsb / name: Jean-Michel Mercier (fc27437)

[dceejay]

Thanks - published as v0.2.3