DNM: demo pull request for go rewrite rollover

[NickElliot]

script instructions at #11666 (comment)

scripts used to convert this specific pr after checking out (starting in mmv1/:

sh scripts/convert-go.sh "$GOPATH/src/github.com/hashicorp/terraform-provider-google-beta" products/datafusion/Instance.yaml,templates/terraform/constants/data_fusion_instance_option.go.erb,templates/terraform/examples/data_fusion_instance_basic.tf.erb,products/datafusion/FakeResource.yaml,templates/terraform/constants/data_fusion_fake_resource_template.go.erb,templates/terraform/constants/data_fusion_instance_new_template.go.erb,templates/terraform/examples/data_fusion_fake_resource.tf.erb
sh scripts/cherry-pick.sh fa4abaf2e55e70da1d83f6b017b6f45a297e3d21
git add -A

Release Note Template for Downstream PRs (will be copied)

[NickElliot]

#11760

1. PR copied into branch NickElliot:switchoverpracticenick

2. steps in this PR description followed

3. commit added

4. force pushed git push --force origin go-rewrite-convert:switchoverpracticenick

[NickElliot]

#11767

1. Backed up into https://github.com/NickElliot/magic-modules/tree/switchover-demo-cam-backup
2. scripts used
3. commit added
4. moved branch from go-rewrite-convert to switchover-demo-cam
5. force pushed to https://github.com/c2thorn/magic-modules.git switchover-demo-cam