fix remove osd job parameters

Change-Id: I1265822aa81588ba1c221780a858f9691871ab45
diff --git a/jenkins/client/job/ceph/remove-osd.yml b/jenkins/client/job/ceph/remove-osd.yml
index 10b9028..448318a 100644
--- a/jenkins/client/job/ceph/remove-osd.yml
+++ b/jenkins/client/job/ceph/remove-osd.yml
@@ -28,8 +28,9 @@
               type: string
               description: OSDs on this HOST will be removed from cluster
             OSD:
-              type: all
+              type: string
               description: These OSDs at HOST will be removed (comma-separated list)
+              default: '*'
             ADMIN_HOST:
               type: string
               description: Host with admin keyring and access to cluster management