Add backwards compatibility for older versions of chef that do not support multiple role paths.

templates/provisioners/chef_solo/solo.erb

@@ -1,3 +1,5 @@
+require 'chef/version_constraint'
+
 <% if node_name %>
 node_name "<%= node_name %>"
 <% end %>
@@ -5,7 +7,11 @@ file_cache_path    "<%= file_cache_path %>"
 file_backup_path   "<%= file_backup_path %>"
 cookbook_path <%= cookbooks_path.inspect %>
 <% if roles_path %>
+if Chef::VersionConstraint.new("< 11.8.0").include?(Chef::VERSION)
+  role_path <%= roles_path.first.inspect %>
+else
   role_path <%= roles_path.inspect %>
+end
 <% end %>
 log_level <%= log_level.inspect %>
 verbose_logging    <%= verbose_logging.inspect %>