title: Artifactory plugin for VSTS not publishing build
body: <p>I've installed the JFrog artifactory plugin in my vsts instance and am trying out a test build to see what gets published. I've setup the plugin as per these docs <a href="https://www.jfrog.com/confluence/display/RTF/VS+Team+Services+Artifactory+Plugin" rel="nofollow noreferrer">https://www.jfrog.com/confluence/display/RTF/VS+Team+Services+Artifactory+Plugin</a> and when I run a build I can see an OPTIONS request in the artifactory log, so VSTS is communicating with my server, but no builds get stored in artifactory.</p>
  
  <p>Have I missed something?</p>
  
  <p>This is my artifactory config for the build
  <a href="https://i.stack.imgur.com/ggMR5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ggMR5.png" alt="enter image description here"></a></p>
  
  <p>Excerpt from Artifactory request log
  <code>20170824152059|0|REQUEST|*****|non_authenticated_user|OPTIONS|/api/build/myTestProject-CI/47|HTTP/1.1|401|0</code></p>
  
  <p>It looks like the authentication details I've put in aren't being used, hence the 401. Also, I only see that OPTIONS request in the artifactory log if I run the VSTS build with <code>system.debug=true</code>.</p>
  
  <p>I've tried enabling anonymous access in artifactory, but the only difference that makes is the OPTIONS request returns 400. I still don't see any builds or any artifacts.</p>
  
  <p><code>20170824152704|638|REQUEST|*****|anonymous|OPTIONS|/api/build/myTestProject-CI/48|HTTP/1.1|200|0</code></p>
  
  <p>And I don't see any mention of artifactory in the vsts build log, even with <code>system.debug=true</code></p>
  
  <p>This is my job config, very simple dummy build at the moment</p>
  
  <p><a href="https://i.stack.imgur.com/ddTeV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ddTeV.png" alt="enter image description here"></a></p>