resilienttest: fix syntax

  We require 8 spaces after the second line for adjust the layout at the generated file.

software/erp5testnode/testsuite/kvm.cfg

@@ -22,6 +22,6 @@ md5sum = 71ddbdeb8769bcb0ebb3c9407ef7e36c
 # always ingest raw values.
 extra-context =
   raw default_test_image_url file://${default-test-image:location}/${default-test-image:filename}
-  raw default_test_image_md5 ${default-test-image:md5sum}
+      raw default_test_image_md5 ${default-test-image:md5sum}