slaprunner: no comments in created ssh keys

software/slaprunner/common.cfg

@@ -54,7 +54,7 @@ mode = 0644
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/instance-runner.cfg
 output = ${buildout:directory}/template-runner.cfg.in
-#md5sum = e62a9604cb10c6b743056294004b95cc
+#md5sum = dcf366fb8a16fa380bb58634b3b0e0cc
 mode = 0644
 
 [template-runner-import-script]

software/slaprunner/instance-runner.cfg

@@ -202,7 +202,7 @@ environment = RUNNER_CONFIG=$${slapos-cfg:rendered}
 [runner-sshd-key-authority]
 recipe = plone.recipe.command
 location = $${directory:sshkeys}/ssh_host_rsa_key
-command = if [ ! -f "$${:location}" ]; then ${openssh:location}/bin/ssh-keygen -t rsa -b 4096 -f "$${:location}" -N ''; fi
+command = if [ ! -f "$${:location}" ]; then ${openssh:location}/bin/ssh-keygen -t rsa -b 4096 -f "$${:location}" -N '' -C ''; fi
 
 [runner-sshd-port]
 recipe = slapos.cookbook:free_port