message: Specific message for no vulnerabilities
  Change message from "0 vulnerable packages" to "Passed" when a pod has
  no vulnerabilities.
diff: @@ -33,8 +33,8 @@ const SecurityScanCell = ({podvuln}) => {
  !isScanned(podvuln) ? <span className="text-muted">(Not scanned)</span> :
  !hasAccess(podvuln) ? <span className="text-muted">(Unable to scan)</span> :
  !isSupported(podvuln) ? <span className="text-muted">(Unsupported)</span> :
  - (fixables ? <span><span className={highest}>{numHighest} {severityMap[highest]}</span> / <span>{fixables} fixables</span></span> :
  - <span>{count.toString()} vulnerable packages</span>)
  + fixables ? <span><span className={highest}>{numHighest} {severityMap[highest]}</span> / <span>{fixables} fixables</span></span> :
  + count === 0 ? <span>Passed</span> : <span>{count.toString()} vulnerable packages</span>
  }
  </span>
  </div>;
  @@ -205,7 +205,7 @@ const Details = (pod) => {
  if (_.has(feature, 'Vulnerabilities')) {
  feature.Vulnerabilities.map((vuln, i) =>
  <ContainerVulnRow key={i} podvuln={podvuln} imgvuln={imgvuln} feature={feature} vuln={vuln} />
  - )
  + );
  }
  })
  )
  