title: format string with multiple values in terraform
body: <p>Terraform version = .12+</p>
  <p>I'm wondering if there's a way to format a single string with multiple values.</p>
  <p>I've tried using the terraform <a href="https://www.terraform.io/docs/configuration/functions/format.html" rel="nofollow noreferrer">format function</a> like so:</p>
  <pre><code>bucket = format(&quot;%-%&quot;, 'dev', &quot;test&quot;)
  bucket = format(&quot;%-%&quot;, ['dev', &quot;test&quot;])
  </code></pre>
  <p>which both output the error:</p>
  <pre><code>Call to function &quot;format&quot; failed: unrecognized format character '%' at offset
  2.
  </code></pre>
  <p>The expected formatted value would be <code>dev-test</code></p>