Acore-server-bootstrap

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**Features and Improvements**

- Automatically launch the server status monitor cron job. It writes the server status to EC2 tag every 30 seconds.
- Add run-on-restart script to automatically restart necessary cron job and the server after reboot.

**Minor Improvements**

- refactor the code to make it more readable.
- ensure the ``sudo`` command is used when necessary.
- ensure the ``sudo -H -u ubuntu`` command is used when necessary.

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**Features and Improvements**

- Automatically configure `acore_soap_app <https://github.com/MacHu-GWU/acore_soap_app-project>`_ SOAP agent.

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- First release
- Add ``acorebs`` command line interface.

.. code-block:: bash

NAME
acorebs - acore server bootstrap command line interface.


SYNOPSIS
acorebs COMMAND

DESCRIPTION
acore server bootstrap command line interface.


COMMANDS
COMMAND is one of the following:

info
Print welcome message.

bootstrap
Bootstrap a new EC2 server.

apply_authserver_conf
Update the authserver.conf.

apply_worldserver_conf
Update the worldserver.conf.

apply_mod_lua_engine_conf
Update the mod_LuaEngine.conf.

apply_server_config
Update the authserver.conf, worldserver.conf and mod_LuaEngine.conf.

create_database
Create the database user for game server and three initial databases.

create_user
Create the database user for game server.

update_realmlist
Update 'acore_auth.realmlist.address'.

configure_db
Configure the database for game server.

disable_ubuntu_auto_upgrade
Disable Ubuntu auto upgrade (don't upgrade mysql).

run_server
Run the game server in screen session.

list_session
List all screen sessions.

enter_worldserver
Enter the worldserver screen session.

stop_server
Stop the game server.