Ensure New Relic Plugin Agent respects init scripts

Use the default log file & PID file paths (see `newrelic` cookbook
plugin-agent attributes), to prevent `/tmp` cleanup from breaking
the plugin agent
Add Better WP Security bot blocking RewriteRules to vhost conf

Lock it up.
Bump version to 0.8.2

* Fixes newrelic-plugin-agent pidfile issues
* Adds bot blocking rules to Apache conf