use more generic default flags in ceph-upgrade job

Related-Prod: PROD-34749
Change-Id: I256a28c1e64476ab7bb950153ecc1899bf15e22d
diff --git a/jenkins/client/job/ceph/upgrade.yml b/jenkins/client/job/ceph/upgrade.yml
index edfb67b..a185fef 100644
--- a/jenkins/client/job/ceph/upgrade.yml
+++ b/jenkins/client/job/ceph/upgrade.yml
@@ -6,7 +6,7 @@
           type: workflow-scm
           concurrent: true
           display_name: "Ceph - upgrade"
-          description: "Jewel-Luminous upgrade job"
+          description: "Ceph upgrade job"
           discard:
             build:
               keep_num: 50
@@ -36,16 +36,16 @@
               description: Wait for healthy during pipeline
             CLUSTER_FLAGS:
               type: string
-              default: 'sortbitwise,noout'
+              default: 'noout'
               description: Flags to be aplied before pipeline and after pipeline (comma-separated list)
             ORIGIN_RELEASE:
               type: string
               description: Ceph release version before upgrade
-              default: 'jewel'
+              default: 'luminous'
             TARGET_RELEASE:
               type: string
               description: Ceph release version after upgrade
-              default: 'luminous'
+              default: 'nautilus'
             STAGE_UPGRADE_MON:
               type: boolean
               default: 'true'