Hard code ubuntu image for clusterctl tests

Change-Id: I57b883bd51c7d554a0b6e18441b02371baf85101

diff --git a/jjb/metal3/job_capm3_main_e2e_clusterctl_upgrade_tests_prow.yml b/jjb/metal3/job_capm3_main_e2e_clusterctl_upgrade_tests_prow.yml
index 801801eea1b570b9f69f50d09a9310183f8709d4..b39038c16bbd0b48f0826467826a04b32d251623 100644 (file)
--- a/jjb/metal3/job_capm3_main_e2e_clusterctl_upgrade_tests_prow.yml
+++ b/jjb/metal3/job_capm3_main_e2e_clusterctl_upgrade_tests_prow.yml
@@ -62,7 +62,7 @@
     # End of Prow parameters
     - string:
         name: IMAGE_OS
-        default: '{image_os}'
+        default: "ubuntu"
         description: 'Distribution to use for the target host as well as source and target cluster. Can be ubuntu or centos'
     - string:
         name: capm3_release_branch