Otherwise systemd fails with:
| ssh.service: Executable /usr/bin/ssh-keygen -A missing, skipping: No such file or directory
Fixup for git rev 6d869c1
[Service]
EnvironmentFile=-/etc/default/ssh
[Service]
EnvironmentFile=-/etc/default/ssh
-ExecStartPre=-"/usr/bin/ssh-keygen -A"
+ExecStartPre=-/usr/bin/ssh-keygen -A
ExecStart=/usr/sbin/sshd -D $SSHD_OPTS
ExecReload=/usr/sbin/sshd -t
ExecReload=/bin/kill -HUP $MAINPID
ExecStart=/usr/sbin/sshd -D $SSHD_OPTS
ExecReload=/usr/sbin/sshd -t
ExecReload=/bin/kill -HUP $MAINPID