slapos_web_deploy: add slapos-standalone script

master/bt5/slapos_web_deploy/PathTemplateItem/web_page_module/deploy_slapos_standalone.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 slapos-standalone.yml -i hosts --connection=local
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