slapos_web_deploy: Add rplc_coupler deploy script

master/bt5/slapos_web_deploy/PathTemplateItem/web_page_module/deploy_rplc_coupler.txt

+#!/bin/bash
+
+set -e
+
+#
+# Paste content of function-common
+# https://lab.nexedi.com/nexedi/slapos.package/blob/master/playbook/roles/install-script/files/function-common
+#
+${function_common_content}
+
+${base_setup_content}
+
+${slapos_install_content}
+
+clear
+
+echo "Starting Ansible playbook:"
+ansible-playbook rplc-coupler.yml -i hosts --connection=local