Don't fail xos-synchronizer-update when there are no test results

Change-Id: I69faaae3a6911c58df61229faff0211cece9ed00
diff --git a/jjb/pipeline/xos-synchronizer-update.groovy b/jjb/pipeline/xos-synchronizer-update.groovy
index 13ae1f7..f677521 100644
--- a/jjb/pipeline/xos-synchronizer-update.groovy
+++ b/jjb/pipeline/xos-synchronizer-update.groovy
@@ -173,8 +173,8 @@
              fi
            done
            """
-         junit '**/nose2-junit.xml'
-         cobertura coberturaReportFile: '**/coverage.xml', fileCoverageTargets: '80, 0, 0', methodCoverageTargets: '50, 0, 0'
+         junit testResults: '**/nose2-junit.xml', allowEmptyResults: true
+         cobertura coberturaReportFile: '**/coverage.xml', fileCoverageTargets: '80, 0, 0', methodCoverageTargets: '50, 0, 0', failNoReports: false
       }
     }