Add Airship v1alpha5 jobs

Change-Id: I10cdf70ed80cf5cf76c24e5f4616bbf276042fd7
diff --git a/jjb/airship/job_feature_tests_ubuntu.yml b/jjb/airship/job_feature_tests_ubuntu.yml
index 963c437..33ef33c 100644
--- a/jjb/airship/job_feature_tests_ubuntu.yml
+++ b/jjb/airship/job_feature_tests_ubuntu.yml
@@ -107,7 +107,7 @@
         allow-whitelist-orgs-as-admins: True
         white-list-target-branches:
           - 'master'
-          - 'release-0.3'
+          - 'release-0.4'
         status-context: "test-features"
         success-status: "Passed"
         failure-status: "Failed"