Upgrading terraform code to support v0.12.3

[balaguduru]

Upgrading terraform code to support v0.12.3.

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[chrislovecnm]

Have the files been formatted with terraform? They do not look like it ...

[chrislovecnm]

/lgtm

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This pull-request has been approved by: balaguduru, chrislovecnm

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