Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/nginx/recipes/http_auth_request_module.rb

@@ -0,0 +1,49 @@
+#
+# Cookbook:: nginx
+# Recipe:: http_auth_request_module
+#
+# Author:: David Radcliffe (<radcliffe.david@gmail.com>)
+#
+# Copyright:: 2013-2017, David Radcliffe
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Documentation:
+#   http://nginx.org/en/docs/http/ngx_http_auth_request_module.html
+if Chef::VersionConstraint.new('>= 1.5.4').include?(node['nginx']['source']['version'])
+  node.run_state['nginx_configure_flags'] =
+    node.run_state['nginx_configure_flags'] | ['--with-http_auth_request_module']
+else
+  arm_src_filename = ::File.basename(node['nginx']['auth_request']['url'])
+  arm_src_filepath = "#{Chef::Config['file_cache_path']}/#{arm_src_filename}"
+  arm_extract_path = "#{Chef::Config['file_cache_path']}/nginx_auth_request/#{node['nginx']['auth_request']['checksum']}"
+
+  remote_file arm_src_filepath do
+    source   node['nginx']['auth_request']['url']
+    checksum node['nginx']['auth_request']['checksum']
+  end
+
+  bash 'extract_auth_request_module' do
+    cwd ::File.dirname(arm_src_filepath)
+    code <<-EOH
+      mkdir -p #{arm_extract_path}
+      tar xzf #{arm_src_filename} -C #{arm_extract_path}
+      mv #{arm_extract_path}/*/* #{arm_extract_path}/
+    EOH
+    not_if { ::File.exist?(arm_extract_path) }
+  end
+
+  node.run_state['nginx_configure_flags'] =
+    node.run_state['nginx_configure_flags'] | ["--add-module=#{arm_extract_path}"]
+end