Workaround for ImageStreamTags issue on OpenShift 3.6

Minor adjustment to how image name is set when creating a
workspace on OpenShift.

On OpenShift 3.6, it seems that using an ImageStreamTag
in a Deployment spec causes the deployment to have null status,
which causes kubernetes-client to throw an NPE.

We still need to decide if this is to be a longer term solution,
and if removing ImageStreamTags completely is a good option

Signed-off-by: Angel Misevski <amisevsk@redhat.com>

plugins/plugin-docker/che-plugin-openshift-client/src/main/java/org/eclipse/che/plugin/openshift/client/OpenShiftConnector.java

@@ -433,6 +433,9 @@ public ContainerCreated createContainer(CreateContainerParams createContainerPar
                                                           openShiftCheProjectName,
                                                           imageStreamTagPullSpec);
 
+        // Workaround for ImageStreamTags issue
+        dockerPullSpec = imageStreamTag.getTag().getFrom().getName();
+
         ContainerConfig containerConfig = createContainerParams.getContainerConfig();
         ImageConfig imageConfig = inspectImage(InspectImageParams.create(imageForDocker)).getConfig();