Fix 16611

• add exception for uvb (https://intranet.grid5000.fr/bugzilla/show_bug.cgi?id=16611)
• clean retired nodes (doc has been updated, https://www.grid5000.fr/mediawiki/index.php?title=TechTeam%3ANode_Retirement&type=revision&diff=104467&oldid=104333)

input/grid5000/dell-product-data.yaml

@@ -362,10 +362,6 @@ sites:
             chassis:
               manufactured_at: 2016-11-04
               warranty_end: 2021-11-03
-          nova-2:
-            chassis:
-              manufactured_at: 2016-10-28
-              warranty_end: 2021-10-27
           nova-21:
             chassis:
               manufactured_at: 2016-11-04
@@ -378,10 +374,6 @@ sites:
             chassis:
               manufactured_at: 2016-11-03
               warranty_end: 2021-11-03
-          nova-3:
-            chassis:
-              manufactured_at: 2016-10-28
-              warranty_end: 2021-10-27
           nova-4:
             chassis:
               manufactured_at: 2016-10-28
@@ -614,10 +606,6 @@ sites:
             chassis:
               manufactured_at: 2017-06-07
               warranty_end: 2022-06-07
-          grele-14:
-            chassis:
-              manufactured_at: 2017-06-07
-              warranty_end: 2022-06-07
           grele-2:
             chassis:
               manufactured_at: 2017-06-07
@@ -2204,5 +2192,7 @@ sites:
             chassis:
               manufactured_at: 2011-01-04
               warranty_end: 2014-01-04
+  strasbourg:
+    clusters: {}
   toulouse:
     clusters: {}