Initial steps towards getting failover to work.
Restrict build-essential version.
Fix slave status loop and Vagrantfile.
Fix permissions on Vagrantfile.
Master/slave improvement

- Wait for slave to finish reading relay log.
- Reset slave during promotion to master.
Fixed on CentOS.
Use rs-fixes branch of mysql cookbook.
Bump default slave functional timeout to 600 seconds.
Removed unnecessary `query` method.
Merge pull request #5 from rightscale-cookbooks/white_14_03_acu151060_failover

White 14 03 acu151060 failover