fix: Prevents creating an unexpected user #12
Merged
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/etc/cloud/cloud.cfg
sets the default user "ubuntu" for any instance of the Ubuntu distro. Changing that is outside of our scope, as it would affect other platforms.Instead we override that key with nothing to prevent creating any default user at all. User creation must be explicitely specified by user-data.
Starting an instance without this change (you'll see the "ubuntu" account UID 1000):
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Starting an instance with this change already seeded (o UID 1000 in /etc/passwd, /home is empty):

Fixes: ubuntu/WSL#468
Closes: UDENG-2748