Fix autofs service and mount detection.

Needed for Amazon Linux:
- /etc/init.d/autofs does detect the service status correctly when used
  inside the restart function.
- The output format of mount changed which lets OHAI not detect all
  mounts. Related: https://tickets.opscode.com/browse/OHAI-453

Conflicts:
	opsworks_initial_setup/recipes/autofs.rb
Make bind mount check more resilient when there's no ephemeral device at all.

Use shellout instead of backticks and df to check mount point.

Use findmnt to have a portable way of checking bind mounts.
Remove logcheck/logtail, as it's actually not used - and logcheck installation fails on Amazon Linux 2014.03.

Conflicts:
	opsworks_ganglia/recipes/monitor-apache.rb
Update default Ruby patch levels.
Fix cookbooks tests for Chef 0.9.
Make Ganglia client service handling more robust.