Update common library to version 3.4.0 to support rawResources

[samcofer]

Hey James,

Thanks for this chart, I ran into an issue when using it, in that I like to keep my IngressRoutes in the values.yaml for each of my applications and unfortunately the version of the bjw-s library that you're using doesn't support rawResources. So I endeavored to update the chart to support the newer version of the underlying library. It may not be great, but it's working in my lab. I'd love it if it worked in your environment too!

I've opened PR: #33

For your review