use group port to fetch configuration, not management port

git-svn-id: http://svn.terracotta.org/svn/ehcache@9231 b9324663-ca0f-0410-8574-be9b3887307d
merge 9231 from trunk/ehcache-os 

git-svn-id: http://svn.terracotta.org/svn/ehcache@9232 b9324663-ca0f-0410-8574-be9b3887307d
Delete ehcache-2.9.0 tag to retag.

git-svn-id: http://svn.terracotta.org/svn/ehcache@9233 b9324663-ca0f-0410-8574-be9b3887307d
Tag ehcache-2.9.0 from 4.2.0-rc branch

git-svn-id: http://svn.terracotta.org/svn/ehcache@9234 b9324663-ca0f-0410-8574-be9b3887307d