title: Snyk test returns Failed to test pip project error
body: <p>I'm running security scan with <a href="https://support.snyk.io/hc/en-us/articles/360003812538-Install-the-Snyk-CLI" rel="noreferrer">Snyk CLI</a> for python project. Unfortunately <code>snyk test</code> command returns <strong>Failed to test pip project</strong> error. What am I missing, <code>snyk test</code> works just fine while scanning <code>npm</code> project ?</p>
  <pre class="lang-sh prettyprint-override"><code>$ snyk test --file=requirements.txt
  Failed to test pip project
  </code></pre>