Add updated remote host install instructions

[cole]

Connects to: archivematica/Issues#763

Based on previous work here: https://github.com/artefactual/deploy-pub/blob/dev/deploy-am-post17/playbooks/archivematica/docs/digital-ocean-install-example.rst

[cole]

Note, I'm getting an error configuring percona (ansible-playbook 2.8.1).

TASK [artefactual.percona : Update the my.cnf] ******************************************************************
fatal: [am-local]: FAILED! => {"changed": false, "msg": "AnsibleError: Unexpected templating type error occurred on (#\n# The MySQL database server configuration file.\n#\n# For explanations see\n# http://dev.mysql.com/doc/mysql/en/server-system-variables.html\n\n[client]\nport        = {{ mysql_port }}\nsocket      = /var/run/mysqld/mysqld.sock\n\n[mysqld_safe]\nsocket      = /var/run/mysqld/mysqld.sock\nnice        = 0\nopen-files-limit = 16384\n\n[mysqld]\n# * Basic Settings\nuser        = mysql\npid-file    = /var/run/mysqld/mysqld.pid\nsocket      = /var/run/mysqld/mysqld.sock\nport        = {{ mysql_port }}\nbasedir     = /usr\ndatadir     = {{ mysql_datadir }}\ntmpdir      = /tmp\n{% if mysql_version_minor < 6 %}\n# language is for pre-5.5. In 5.5 it is an alias for lc_messages_dir.\nlanguage = {{ mysql_language }}\n{% else %}\nlc_messages_dir = {{ mysql_language }}\n{% endif %}\nbind-address = {{ mysql_bind_address }}\nskip-external-locking\n{% if mysql_sql_mode is defined %}\nsql_mode={{ mysql_sql_mode }}\n{% endif %}\n\n# * Fine Tuning\nkey_buffer_size         = {{ mysql_key_buffer }}\nmax_allowed_packet      = {{ mysql_max_allowed_packet }}\nthread_stack            = {{ mysql_thread_stack }}\nthread_cache_size       = {{ mysql_cache_size }}\n{% if mysql_version_minor < 7 %}\nmyisam-recover          = {{ mysql_myisam_recover }}\n{% else %}\nmyisam-recover-options  = {{ mysql_myisam_recover }}\n{% endif %}\nmax_connections         = {{ mysql_max_connections }}\ntable_open_cache        = {{ mysql_table_cache }}\n{% if mysql_version_minor < 7 %}\nthread_concurrency      = {{ mysql_thread_concurrency }}\n{% endif %}\n\n# ** Query Cache Configuration\nquery_cache_limit       = {{ mysql_query_cache_limit }}\nquery_cache_size        = {{ mysql_query_cache_size }}\n\n# ** Logging and Replication\nlog_error = /var/log/mysql/error.log\nlog_warnings = 2\n#general_log_file        = /var/log/mysql/mysql.log\n#general_log             = 1\n#\n#log_slow_queries   = /var/log/mysql/mysql-slow.log\n#long_query_time = 2\n#log-queries-not-using-indexes\n#\n# The following can be used as easy to replay backup logs or for replication.\n#server-id      = 1\n#log_bin            = /var/log/mysql/mysql-bin.log\nexpire_logs_days    = 10\nmax_binlog_size     = 100M\n#binlog_do_db       = include_database_name\n#binlog_ignore_db   = include_database_name\n\n# ** InnoDB\n# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.\n# Read the manual for more InnoDB related options. There are many!\ninnodb_flush_log_at_trx_commit = {{ mysql_innodb_flush_log_at_trx_commit }}\ninnodb_buffer_pool_size = {{ mysql_innodb_buffer_pool_size }}\n{% if mysql_innodb_flush_method != 'fdatasync': %}\ninnodb_flush_method = {{ mysql_innodb_flush_method }}\n{% endif %}\ninnodb_lock_wait_timeout = {{ mysql_innodb_lock_wait_timeout }}\ninnodb_log_buffer_size = {{ mysql_innodb_log_buffer_size }}\ninnodb_log_file_size = {{ mysql_innodb_log_file_size }}\ninnodb_file_per_table = {{ mysql_innodb_file_per_table }}\n\n{% if mysql_optimizer_switch is defined %}\n# Check https://bugs.mysql.com/bug.php?id=69721 for more info\noptimizer_switch = {{ mysql_optimizer_switch }}\n{% endif %}\n\n# ** Security Features\n# Read the manual, too, if you want chroot!\n# chroot = /var/lib/mysql/\n\ncharacter_set_server = {{ mysql_character_set_server }}\ncollation_server = {{ mysql_collation_server }}\ncharacter-set-client-handshake = {{ mysql_character_set_client_handshake }}\n\n[mysqldump]\nquick\nquote-names\nmax_allowed_packet  = {{ mysql_mysqldump_max_allowed_packet }}\n\n[mysql]\n#no-auto-rehash # faster start of mysql but no tab completition\n\n[isamchk]\nkey_buffer      = {{ mysql_isamchk_key_buffer }}\n\n#\n# * IMPORTANT: Additional settings that can override those from this file!\n#   The files must end with '.cnf', otherwise they'll be ignored.\n#\n!includedir /etc/mysql/conf.d/\n): '<' not supported between instances of 'AnsibleUnicode' and 'int'"}

[cole]

Works with Ansible 2.3. I've added a note in 2e0dc5e.