aws-test: Add a rhcos_test=smoketested tag

This way the installer can do a query for those.

Author: cgwalters

Jenkinsfile.aws-test

@@ -59,6 +59,9 @@ node(NODE) {
                     fi
 
                     cp ${dirpath}/aws-${AWS_REGION}-smoketested.json ${images}/aws-${AWS_REGION}-tested.json
+                    aws ec2 create-tags \
+                        --resources ${ami_intermediate} \
+                        --tags rhcos_tag=alpha
                     aws ec2 modify-image-attribute \
                         --image-id ${ami_intermediate} \
                         --launch-permission '{"Add":[{"Group":"all"}]}'