NIP-1214 should install java 7 on CentOS

Add java 7 module/class from https://github.com/softek/puppet-java7
and modify it for CentOS
Add java.preseed file and correct module name in v7.pp
Merge pull request #1 from vorce/NIP-1214-java7

NIP-1214 should install java 7 on CentOS