Get IPA buildimage POST job into healthcheck

This patch adds subunit output to the end of the buildimage job so that
heathcheck will have information on success or failure of the job.
This patch implements this using an exit trap, this is a temporary
solution until Zuul can report the success/failure of jobs directly to
healthcheck. This solution will only catch failures that occur during
the actual image build process, any errors that occur inside the scp
publisher's will not be detected by this change.

Change-Id: Id26ed8f40cc659e065c598e2e7af760e8be42419

jenkins/jobs/ironic-python-agent-jobs.yaml

@@ -30,6 +30,29 @@
           mkdir UPLOAD_RAW
           mkdir UPLOAD_TAR
 
+          JOBNAME={template-name}
+          TRANS_START_TIME=$(date +%s)
+          SUBUNIT_OUTPUT=testrepository.subunit
+          ERRORS=1
+          VENV=$(mktemp -d)
+          virtualenv $VENV
+          $VENV/bin/pip install -U os-testr
+
+          trap "finish" EXIT
+
+          function finish {{
+              if [[ '$ERRORS' -eq 1 ]]; then
+                  $VENV/bin/generate-subunit $TRANS_START_TIME $SECONDS 'fail' $JOBNAME >> $SUBUNIT_OUTPUT
+              else
+                  $VENV/bin/generate-subunit $TRANS_START_TIME $SECONDS 'success' $JOBNAME >> $SUBUNIT_OUTPUT
+              fi
+              gzip -9 $SUBUNIT_OUTPUT
+              if [ "$VENV" != "" ] ; then
+                  rm -rf $VENV
+                  VENV=""
+              fi
+          }}
+
           type="{image-type}"
           case $type in
               tinyipa)
@@ -47,6 +70,7 @@
                   mv ipa-coreos*.tar.gz UPLOAD_TAR
               ;;
           esac
+          ERRORS=0
 
 
     publishers:
@@ -61,4 +85,11 @@
               target: 'tarballs/ironic-python-agent/{image-type}/'
               keep-hierarchy: false
               copy-after-failure: false
+      - scp:
+          site: 'static.openstack.org'
+          files:
+            - target: 'logs/$LOG_PATH'
+              source: 'testrepository.subunit.gz'
+              keep-hierarchy: false
+              copy-after-failure: true
       - console-log