Disable binNMUs from *pu for now

Support for binNMUs from *pu is currently broken, so disable it for now.
see https://bugs.debian.org/916209 for more info.

Signed-off-by: Ivo De Decker <ivodd@debian.org>

britney.py

@@ -1286,13 +1286,14 @@ class Britney(object):
                 excuse.addhtml("Updated binary: %s (%s to %s)" % (pkg_name, binary_t.version, binary_u.version))
                 anyworthdoing = True
 
-        # if there is nothing wrong and there is something worth doing or the source
-        # package is not fake, then check what packages should be removed
-        if not anywrongver and (anyworthdoing or not source_u.is_fakesrc):
         srcv = source_u.version
         same_source = source_t.version == srcv
         primary_source_suite = self.suite_info.primary_source_suite
         is_primary_source = source_suite == primary_source_suite
+
+        # if there is nothing wrong and there is something worth doing or the source
+        # package is not fake, then check what packages should be removed
+        if not anywrongver and (anyworthdoing or not source_u.is_fakesrc):
             # we want to remove binaries that are no longer produced by the
             # new source, but there are some special cases:
             # - if this is binary-only (same_source) and not from the primary
@@ -1332,6 +1333,14 @@ class Britney(object):
                             # reverse dependencies.
                             anyworthdoing = True
 
+        if anyworthdoing and same_source and not is_primary_source:
+            # support for binNMUs from *pu is currently broken, so disable it
+            # for now
+            # see https://bugs.debian.org/916209 for more info
+            excuse.addhtml("Ignoring binaries for %s from %s on %s (see https://bugs.debian.org/916209)" % (src, source_suite.name, arch))
+            self.excuses[excuse.name] = excuse
+            return False
+
         # if there is nothing wrong and there is something worth doing, this is a valid candidate
         if not anywrongver and anyworthdoing:
             excuse.policy_verdict = PolicyVerdict.PASS