Found workaround to allow overriding default user in cloud-init as root and allowing root to ssh with a password LP: #1834676
Worked on netplan and systemd-networkd configuration for Azure with @raharper to support multiple-static ips on a dhcp interface for Azure LP: #1815254.
Wrote spec for cloud-init rendering netplan configuration on Azure for secondary IPs from IMDS and sent it around to interested Canonical networking and CPC folks