ohai: Skip saving etc/passwd entries (bsc#1058017)

These can be a really large subtree that prevents indexing, so
don't save it.

chef/cookbooks/ohai/recipes/default.rb

@@ -112,6 +112,15 @@
 # drop relatively big attributes that we know we won't use
 node.automatic_attrs["kernel"].delete("modules")
 
+# drop the collected Etc.passwd entries, these can be huge
+if node.automatic_attrs.key?("etc") && node.automatic_attrs["etc"].key?("passwd")
+  node.automatic_attrs["etc"].delete("passwd")
+end
+
+# Temporary workaround for nova cookbook dependency, remove after 2017/12
+node.automatic_attrs["etc"] ||= Mash.new
+node.automatic_attrs["etc"]["passwd"] ||= Mash.new
+
 # duplicates the cpu data
 node.automatic_attrs["dmi"].delete("processor")
 # when looking at cpu data, we're happy looking at the first one only; removing

chef/cookbooks/provisioner/templates/default/crowbar_join.suse.sh.erb

@@ -253,6 +253,9 @@ EOF
     line='Encoding.default_external = Encoding::UTF_8 if RUBY_VERSION > "1.9"'
     grep -q -e "^$line$" /etc/chef/client.rb || echo "$line" >> /etc/chef/client.rb
 
+    # work around: avoid excessively large node attributes due to large number of accounts
+    line='Ohai::Config[:disabled_plugins] << "passwd"'
+    grep -q -e "^$line$" /etc/chef/client.rb || echo "$line" >> /etc/chef/client.rb
 }
 
 do_chef_client_after_setup() {