Vendor the external cookbooks

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

cookbooks/elasticsearch/templates/default/systemd_unit.erb

@@ -0,0 +1,60 @@
+[Unit]
+Description=Elasticsearch
+Documentation=http://www.elastic.co
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+RuntimeDirectory=elasticsearch
+Environment=ES_HOME=/usr/share/elasticsearch
+Environment=ES_PATH_CONF=/etc/elasticsearch
+Environment=PID_DIR=/var/run/elasticsearch
+EnvironmentFile=-<%= @default_dir %>/<%= @program_name %>
+
+WorkingDirectory=<%= @path_home %>
+
+User=elasticsearch
+Group=elasticsearch
+
+ExecStart=<%= @path_home %>/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid --quiet
+
+# StandardOutput is configured to redirect to journalctl since
+# some error messages may be logged in standard output before
+# elasticsearch logging system is initialized. Elasticsearch
+# stores its logs in /var/log/elasticsearch and does not use
+# journalctl by default. If you also want to enable journalctl
+# logging, you can simply remove the "quiet" option from ExecStart.
+StandardOutput=journal
+StandardError=inherit
+
+# Specifies the maximum file descriptor number that can be opened by this process
+LimitNOFILE=65536
+
+# Specifies the maximum number of processes
+LimitNPROC=4096
+
+# Specifies the maximum size of virtual memory
+LimitAS=infinity
+
+# Specifies the maximum file size
+LimitFSIZE=infinity
+
+# Disable timeout logic and wait until process is stopped
+TimeoutStopSec=0
+
+# SIGTERM signal is used to stop the Java process
+KillSignal=SIGTERM
+
+# Send the signal only to the JVM rather than its control group
+KillMode=process
+
+# Java process is never killed
+SendSIGKILL=no
+
+# When a JVM receives a SIGTERM signal it exits with code 143
+SuccessExitStatus=143
+
+[Install]
+WantedBy=multi-user.target
+
+# Built for distribution-6.0.0 (distribution)