[FIX JENKINS-47774] Re-enable activity-spec test (#1537)
[FIX JENKINS-47774] Re-enable activity-spec test (#1537)


jenkinsci/blueocean-plugin,kzantow/blueocean-plugin,kzantow/blueocean-plugin,kzantow/blueocean-plugin,jenkinsci/blueocean-plugin,kzantow/blueocean-plugin,jenkinsci/blueocean-plugin,jenkinsci/blueocean-plugin,jenkinsci/blueocean-plugin