TABINF-3883 Configure nexus-staging-maven-plugin to improve automation of usage of nexus staging repositories
Configuration done inside a profile - deploy-terracotta - to not affect maven central deployment.

git-svn-id: http://svn.terracotta.org/svn/ehcache@9025 b9324663-ca0f-0410-8574-be9b3887307d
TABINF-3883 merge rev 9025 from branches/ehcache-2.8.x

git-svn-id: http://svn.terracotta.org/svn/ehcache@9026 b9324663-ca0f-0410-8574-be9b3887307d
Delete ehcache-2.8.3 tag to retag.

git-svn-id: http://svn.terracotta.org/svn/ehcache@9027 b9324663-ca0f-0410-8574-be9b3887307d
Tag ehcache-2.8.3 from 4.1.3-rc branch

git-svn-id: http://svn.terracotta.org/svn/ehcache@9028 b9324663-ca0f-0410-8574-be9b3887307d