On arm64 external services would not load on boot because of DNS i/o timeouts or valid TLS certificates appearing expired or not issued yet (I know that sounds weird).
Stringify libcompose datatypes' leaf values to avoid unmarshaling errors, even on somewhat incorrect input data: like using bools or numerics in labels.
Read files cloud-config.d in alphanumeric order, then cloud-config.yml
`ros config` writes to cloud-config.yml (and cloud-config.d/private.yml - only private keys)
Add (c *CloudConfig) Save() method, use it to save the changed config
Read and apply metadata as part of LoadConfig()
Simplify ros config export logic
