Added cookbook dependencies
create clustercheck & xtrabackup accounts using mysql_database_user lwrp
Added some DB/EDB helpers
removed stray CR
FC045: Consider setting cookbook name in metadata
Moved the clustercheck user creation to percona::clustercheck
set the xtrabackup_password in my.cnf
removed unecessary libraries
Merge pull request #1 from simonmcc/master

DB/EDB helper functions, tidied up xtrabackup account creation etc