Let the cacher invalidate signed entities instead of the reloader

mdserver.py

@@ -77,15 +77,15 @@ def read_metadata(signum, frm):
             for entity_descriptor in root.findall('md:EntityDescriptor', ns):
                 entityID = entity_descriptor.attrib.get('entityID', 'none')
                 sha1 = hasher(entityID)
+                print(f"{{sha1}}{sha1} {entityID}")
                 entity_descriptor.set('validUntil', validUntil)
                 entity_descriptor.set('cacheDuration', cacheDuration)
                 entity = Entity()
                 entity.md = entity_descriptor
                 entity.valid_until = valid_until
-                print(f"{{sha1}}{sha1} {entityID}")
                 idps[sha1] = entity
-                signed.pop(sha1, None)
                 old_idps.pop(sha1, None)
+                # signed.pop(sha1, None)
                 found += 1
         for idp in old_idps:
             idps.pop(idp, None)