message: Handle pods with no vulnerabilities
  In the case where a pod has no vulnerabilities, the "Vulnerabilities"
  field will be nil.
diff: @@ -201,11 +201,13 @@ const Details = (pod) => {
  <div className="co-m-table-grid__body">
  {
  podvuln.imagevulns.map((imgvuln) =>
  - imgvuln.Features.map((feature) =>
  + imgvuln.Features.map((feature) => {
  + if (_.has(feature, 'Vulnerabilities')) {
  feature.Vulnerabilities.map((vuln, i) =>
  <ContainerVulnRow key={i} podvuln={podvuln} imgvuln={imgvuln} feature={feature} vuln={vuln} />
  )
  - )
  + }
  + })
  )
  }
  </div>
  