Deprecated feature warnings from terraform

[wrm-git]

When creating a cluster in verbose mode (i.e., with "Rhoc create cluster -v") multiple warnings about deprecated usage are issued, including:

• Warning: Quoted references are deprecated
• Warning: Quoted type constraints are deprecated
• Warning: Interpolation-only expressions are deprecated

[vnlitvinov]

Are you using an updated Terraform by any chance, instead of what was vendored in?

[wrm-git]

I just followed the build directions, and the build automatically pulled and built the Hashi tools.