op-mode: T7751: fix re-generating SSH server key causes PermissionError

Fixes an issue when re-generating SSH server key

vyos@vyos:~$ generate ssh server-key
Do you really want to remove the existing SSH host keys? [y/N] y
Traceback (most recent call last):
  File "/usr/libexec/vyos/op_mode/generate_ssh_server_key.py", line 31, in <module>
    cmd('systemctl restart ssh.service')
  File "/usr/lib/python3/dist-packages/vyos/utils/process.py", line 155, in cmd
    raise OSError(code, feedback)
PermissionError: [Errno 1] failed to run command: systemctl restart ssh.service
returned:
exit code: 1

1 files changed, 5 insertions, 1 deletions

diff --git a/src/op_mode/generate_ssh_server_key.py b/src/op_mode/generate_ssh_server_key.py
index 386112c10..459157afd 100755
--- a/src/op_mode/generate_ssh_server_key.py
+++ b/src/op_mode/generate_ssh_server_key.py
@@ -15,6 +15,8 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from sys import exit
+
+from vyos.defaults import directories
 from vyos.utils.io import ask_yes_no
 from vyos.utils.process import cmd
 from vyos.utils.commit import commit_in_progress
@@ -26,6 +28,8 @@ if commit_in_progress():
     print('Cannot restart SSH while a commit is in progress')
     exit(1)
 
+conf_mode_dir = directories['conf_mode']
+
 cmd('rm -v /etc/ssh/ssh_host_*')
 cmd('dpkg-reconfigure openssh-server')
-cmd('systemctl restart ssh.service')
+cmd(f'{conf_mode_dir}/service_ssh.py')