Implement Fn::Base64

[Angus Salkeld]

Currently we don't actually encode anything in Base64 when Fn::Base64 appears in the template.

[Angus Salkeld (asalkeld)]

sdake
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I am pretty sure I tried this once and the userdata didn't end up in the virtual machine in a correct format. Feel free to give it another go tho :)

jeos tools show how to encode in b64. They encode the cfn tools.

[Steve Baker (steve-stevebaker)]

There are so many templates that (unnecessarily) use Fn::Base64 I worry that they will all break when this gets implemented.

[Zane Bitter (zaneb)]

I think the key is to make sure the UserData accepts either plain or base-64 input.

[Steve Baker (steve-stevebaker)]

Ah, so nova_utils.build_userdata needs to detect if userdata is base-64, then decode it before adding it to the cloud-init package?