Do not allow buildout to delete ssh private key.

It prevents data loss while upgrading partition.

software/backupserver/instance-pullrdiffbackup.cfg.in

@@ -75,7 +75,6 @@ recipe = plone.recipe.command
 stop-on-error = true
 command = ${dropbear-output:keygen} -t $${:type} -s 2048 -f $${:key} 
 key = $${directory:ssh}/$${:_buildout_section_name_}
-location = $${:key}
 type = rsa
 
 [{{ slave_reference }}-backup-public_key]

software/backupserver/software.cfg

@@ -234,7 +234,7 @@ mode = 0644
 [template-pullrdiffbackup]
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/instance-pullrdiffbackup.cfg.in
-md5sum = 3b1974f3a344fc1c1d86ec4ec44ae2ff
+md5sum = 2de3f1082b1e14610c3ad7109d158e9f
 output = ${buildout:directory}/template-pullrdiffbackup.cfg
 mode = 0644