fix gem install failure for ubuntu

chef-client gem install does not honor .gemrc in time,
so specify the http-proxy option explicitly.
moreover, post-apt-config kickstart file has a syntax
error, which is also fixed in the patch.

Change-Id: Iadf78b6c0aff691e3f6824c20e906b75b681e848
Closes-bug: #1393967
Closes-bug: #1396948

chef/cookbooks/mysql/recipes/ruby.rb

@@ -44,8 +44,17 @@ node['mysql']['client']['packages'].each do |name|
   resources("package[#{name}]").run_action(:install)
 end
 
+# unknown reason cause chef-client not to honor .gemrc immediately
+# even not until timeout is reached, so specify the options explicitly.
 if node['local_repo'].nil? or node['local_repo'].empty?
-  chef_gem 'mysql'
+  if node['proxy_url']
+    gem_package 'mysql' do
+      options("--http-proxy #{node['proxy_url']}")
+      action :install
+    end
+  else
+    chef_gem 'mysql'
+  end
 else
   gem_package 'mysql' do
     options("--clear-sources --source #{node['local_repo']}/gem_repo/")

cobbler/snippets/preseed_post_apt_repo_config

@@ -1,6 +1,6 @@
 cat << EOF > /etc/apt/apt.conf
 #if $getVar('proxy', '') != ''
-Acquire::http::Proxy "$proxy"
+Acquire::http::Proxy "$proxy";
 #end if
 EOF