Wan-aware cache wrapper should not throw an exception on keySet().

git-svn-id: http://svn.terracotta.org/svn/ehcache@8347 b9324663-ca0f-0410-8574-be9b3887307d
MNK-5692: Merged r8303


git-svn-id: http://svn.terracotta.org/svn/ehcache@8348 b9324663-ca0f-0410-8574-be9b3887307d
MNK-5691: need a defaultCacheConfiguration that is terracottaCluster else you don't get a clusteredInstanceFactory nor an MBean required by the management agent. Caused by https://jira.terracotta.org/jira/browse/ENG-325.


git-svn-id: http://svn.terracotta.org/svn/ehcache@8349 b9324663-ca0f-0410-8574-be9b3887307d