INT-2919 No longer activate system-tests module in check-short

git-svn-id: http://svn.terracotta.org/svn/ehcache@8743 b9324663-ca0f-0410-8574-be9b3887307d
INT-2919 merge rev 8743 from trunk

git-svn-id: http://svn.terracotta.org/svn/ehcache@8744 b9324663-ca0f-0410-8574-be9b3887307d