Re-enable port 2200 console service under OpenSSH

meta-phosphor/recipes-phosphor/console/obmc-console/obmc-console-ssh@.service

 [Unit]
 Description=Phosphor Host Console SSH Per-Connection
 Wants=obmc-console@{OBMC_CONSOLE_HOST_TTY}.service
+Wants=sshdgenkeys.service
 
 [Service]
-Environment="DROPBEAR_RSAKEY_DIR=/etc/dropbear"
-EnvironmentFile={envfiledir}/dropbear
-ExecStart=-/usr/bin/env dropbear -i -r ${{DROPBEAR_RSAKEY_DIR}}/dropbear_rsa_host_key -c "/usr/bin/env obmc-console-client" $DROPBEAR_EXTRA_ARGS
-SyslogIdentifier=dropbear
-ExecReload={base_bindir}/kill -HUP $MAINPID
+Environment="SSHD_OPTS="
+EnvironmentFile=-/etc/default/ssh
+ExecStart=-@SBINDIR@/sshd -i -o ForceCommand="/usr/bin/env obmc-console-client"
+SyslogIdentifier=sshd
+ExecReload=@BASE_BINDIR@/kill -HUP $MAINPID
 StandardInput=socket
+StandardError=syslog
 KillMode=process