Downgrade owncloud to 7.0.8, 8.0.6, and 8.1.1

See https://forum.owncloud.org/viewtopic.php?p=95788#p95788 for details -- apparently there was a glitch and the download page / changelog were updated prematurely.

library/owncloud

@@ -4,14 +4,14 @@
 6.0: git://github.com/docker-library/owncloud@d691efbe821094e710340aa025ff98788a7464ed 6.0
 6: git://github.com/docker-library/owncloud@d691efbe821094e710340aa025ff98788a7464ed 6.0
 
-7.0.9: git://github.com/docker-library/owncloud@ddc40eb3f52bcff1ed638dd07ae9280bb96d0c11 7.0
-7.0: git://github.com/docker-library/owncloud@ddc40eb3f52bcff1ed638dd07ae9280bb96d0c11 7.0
-7: git://github.com/docker-library/owncloud@ddc40eb3f52bcff1ed638dd07ae9280bb96d0c11 7.0
+7.0.8: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 7.0
+7.0: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 7.0
+7: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 7.0
 
-8.0.7: git://github.com/docker-library/owncloud@ddc40eb3f52bcff1ed638dd07ae9280bb96d0c11 8.0
-8.0: git://github.com/docker-library/owncloud@ddc40eb3f52bcff1ed638dd07ae9280bb96d0c11 8.0
+8.0.6: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 8.0
+8.0: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 8.0
 
-8.1.2: git://github.com/docker-library/owncloud@b173a67ad37c18df3a8c9766a3cbff71fb985a0d 8.1
-8.1: git://github.com/docker-library/owncloud@b173a67ad37c18df3a8c9766a3cbff71fb985a0d 8.1
-8: git://github.com/docker-library/owncloud@b173a67ad37c18df3a8c9766a3cbff71fb985a0d 8.1
-latest: git://github.com/docker-library/owncloud@b173a67ad37c18df3a8c9766a3cbff71fb985a0d 8.1
+8.1.1: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 8.1
+8.1: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 8.1
+8: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 8.1
+latest: git://github.com/docker-library/owncloud@4596b4e046d6895d4d832637aa08fc723198a511 8.1