Group tags together using nested JSON encoding

[BHoggs]

Is your feature request related to a problem? Please describe. With the number of tags that yor adds, we're starting to hit platform limitations when adding a few tags of our own. For example, some Azure resources only support a maximum of 15 tags.

Describe the solution you'd like Azure recommends if you're running out of tags, to nest a JSON blob as the tag value.

Add an option to enable "grouping" of tags by using using this method, so that all of the git tags can be grouped into a single tag.

e.g.

  tags = {
    "git_commit"           = "..."
    "git_file"             = "..."
    "git_last_modified_at" = "..."
    "git_last_modified_by" = "..."
    "git_modifiers"        = "..."
    "git_org"              = "..."
    "git_repo"             = "..."
  }
  # Becomes:
  tags = {
    "git" = jsonencode({
      "commit"           = "..."
      "file"             = "..."
      "last_modified_at" = "..."
      "last_modified_by" = "..."
      "modifiers"        = "..."
      "org"              = "..."
      "repo"             = "..."
    })
  }

Describe alternatives you've considered Filtering out tags

Additional context https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/tag-resources#limitations

[stale[bot]]

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