Add gandi

[julialongtin]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
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PR Post Submission Checklist for internal contributors (Optional)

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[amitsagtani97]

@julialongtin We have started using wire.link domains for WIAB envs. Do you think we still need Gandi domain support, or this can be closed?