Disable DocTor checks for dannenberg

Dannenberg will be unable to sign the consensus until November due to lack of
the present consensus in Tor's LTS release (and by extension openbsd's).

consensus_health_checker.py

@@ -28,6 +28,11 @@ Runlevel = stem.util.enum.UppercaseEnum('NOTICE', 'WARNING', 'ERROR')
 DIRECTORY_AUTHORITIES = stem.directory.Authority.from_cache()
 del DIRECTORY_AUTHORITIES['tor26']  # DirPort does not service requests without a '.z' suffix
 
+# dannenberg runs tor's long-term-stable release which does not support the
+# most recent consensus method, breaking its ability to sign the consensus
+
+del DIRECTORY_AUTHORITIES['dannenberg']
+
 EMAIL_SUBJECT = 'Consensus issues'
 BANDWIDTH_AUTHORITIES = ('moria1', 'gabelmoo', 'maatuska', 'Faravahar', 'bastet', 'longclaw')
 
@@ -641,6 +646,9 @@ def has_authority_flag(latest_consensus, consensuses, votes):
   if 'tor26' in seen_authorities:
     seen_authorities.remove('tor26')
 
+  if 'dannenberg' in seen_authorities:
+    seen_authorities.remove('dannenberg')
+
   known_authorities = set(DIRECTORY_AUTHORITIES.keys())
   missing_authorities = known_authorities.difference(seen_authorities)
   extra_authorities = seen_authorities.difference(known_authorities)