slaprunner: Export (rsync) ignore missing args

  When a file is removed while rsync is running (after build the list and before transfer the file), rsync fail with the follow message:

     rsync warning: some files vanished before they could be transferred

  This commit includes   --ignore-missing-args into rsync command line to ignore this case, as it is not relevant to the resilience
if a file is removed.

software/slaprunner/buildout.hash.cfg

@@ -31,7 +31,7 @@ md5sum = 5cfa49bcf20612844e1c50a85740d0b3
 
 [template-runner-export-script]
 filename = template/runner-export.sh.jinja2
-md5sum = ef87691a9675beb646ae1c99ef69e551
+md5sum = 94c0eddb2af3290942f64e04f95a707c
 
 [instance-runner-export]
 filename = instance-runner-export.cfg.in

software/slaprunner/template/runner-export.sh.jinja2

@@ -20,7 +20,7 @@ tmp_directory='{{ directory["tmp"] }}'
 
 rsync () {
   set -x
-  '{{ rsync_binary }}' -rlptgov --stats --safe-links --delete --delete-excluded "$@"
+  '{{ rsync_binary }}' -rlptgov --stats --safe-links --ignore-missing-args --delete --delete-excluded "$@"
   set +x
 }