excuses: Point to the d-i release manager when block-udeb is involved.

Signed-off-by: Cyril Brulebois <kibi@debian.org>

britney.py

@@ -1088,8 +1088,11 @@ class Britney(object):
 
         # if the package is blocked, skip it
         for hint in self.hints.search('block', package=pkg, removal=True):
-            excuse.addhtml("Not touching package, as requested by %s "
-                "(check https://release.debian.org/jessie/freeze_policy.html if update is needed)" % hint.user)
+            tooltip = "check https://release.debian.org/jessie/freeze_policy.html if update is needed"
+            # redirect people to d-i RM for udeb things:
+            if block_cmd == 'block-udeb':
+                tooltip = "please contact the d-i release manager if an update is needed"
+            excuse.addhtml("Not touching package, as requested by %s (%s)" % (hint.user, tooltip))
             excuse.addhtml("Not considered")
             excuse.addreason("block")
             self.excuses.append(excuse)