set slaves to nil when no slaves found
we shouldn't care about the ['mysql']['server_repl_password']

this just causes confusion, we don't use that user at all
set the repl password to master's on the slave
set the repl password if needed
set the repl password before default recipe is run

fixes #24

Signed-Off-By: Matthew Thode <mthode@mthode.org>
fixing tests
Merge pull request #26 from rackspace-cookbooks/pfire

fixing replication