cloud-init service file is missing sshd required services
Orabug: 32183938 

in the systemd sshd-keygen.target file, the following services are listed:
[Unit]
Wants=sshd-keygen@rsa.service
Wants=sshd-keygen@ecdsa.service
Wants=sshd-keygen@ed25519.service

Need to add the following to the cloud-init service file:
Before=sshd-keygen@rsa.service
Before=sshd-keygen@ecdsa.service
Before=sshd-keygen@ed25519.service

Signed-off-by: Isaac Chen <isaac.chen@oracle.com>

diff -up cloud-init-19.4/systemd/cloud-init.service.tmpl.orig cloud-init-19.4/systemd/cloud-init.service.tmpl
--- cloud-init-19.4/systemd/cloud-init.service.tmpl.orig	2020-12-10 13:03:19.978023730 -0800
+++ cloud-init-19.4/systemd/cloud-init.service.tmpl	2020-12-10 13:07:35.791879370 -0800
@@ -21,7 +21,9 @@ After=wicked.service
 After=dbus.service
 {% endif %}
 Before=network-online.target
-Before=sshd-keygen.service
+Before=sshd-keygen@rsa.service 
+Before=sshd-keygen@ecdsa.service 
+Before=sshd-keygen@ed25519.service
 Before=sshd.service
 {% if variant in ["ubuntu", "unknown", "debian"] %}
 Before=sysinit.target