Unable to disable multiple ohai plugins

[clburlison]

Currently we can't disable multiple ohai plugins since the template code below don't properly handle the comma and line break.

bakeit/client/client.go

Lines 48 to 55 in 0e41518

	{{- if .OhaiDisabledPlugins}}
	{{ $disabled_plugins := .OhaiDisabledPlugins }}
	ohai.disabled_plugins = [
	{{ range $disabled_plugins }}
	{{- . -}}
	{{ end }}
	]
	{{end}}

Use the following config code to create a broken client.rb file.

	ChefClientOhaiDisabledPlugins = map[string][]string{
		"darwin":  {":Passwd", ":SomethingElse"},
		"windows": {},
		"linux":   {},
	}