Metal3: Add 'daily' keyword in main job names to better differentiate them from PR jobs.

Change-Id: Iffdc8034f26b5ef46a3dd612b19d334a94a4d120
diff --git a/jjb/metal3/job_main_clean.yml b/jjb/metal3/job_main_clean.yml
index 03d1b0f..2ad3fa4 100644
--- a/jjb/metal3/job_main_clean.yml
+++ b/jjb/metal3/job_main_clean.yml
@@ -27,7 +27,7 @@
 
 - job-template:
     id: main_clean
-    name: '{job_prefix}_main_integration_tests_cleanup'
+    name: '{job_prefix}_daily_main_integration_tests_cleanup'
     description: "CAPM3 integration tests cleanup"
     project-type: pipeline
     defaults: global