Stretch support

- Support Debian Stretch (MariaDB debian/upstream + Galera)
- Doc updated
- New travis tests (with Vagrant)
- Drop support of mysql_innodb_additional_mem_pool_size
- Xtrabackup optionnal installation + package name updatable
- Fix many issues with replication (Ansible 2.3)
- Auto-retreive master IP address on tests
- MySQL tools per OS release

tests/group_vars/all

@@ -1,4 +1,5 @@
-mysql_bind_address: '{{ ansible_eth1.ipv4.address }}'
+mysql_bind_address: '0.0.0.0'
 mysql_extra_configuration:
   innodb_commit_concurrency: 0
 mysql_use_percona_apt: true
+mysql_install_xtrabackup_package: true

tests/group_vars/default

@@ -1 +0,0 @@
-mysql_origin: 'default'

tests/group_vars/mariadb

@@ -1 +0,0 @@
-mysql_vendor: 'mariadb'

tests/group_vars/mariadbgalera

@@ -1,5 +1,5 @@
 mysql_vendor: 'mariadb_galera'
 mysql_galera_members:
-  - '192.168.200.18'
-  - '192.168.200.19'
-  - '192.168.200.20'
+  - '{% if is_docker %}docker-{% else %}vbox-{% endif %}{{ ansible_distribution_release }}-upstream-mariadbgalera-1'
+  - '{% if is_docker %}docker-{% else %}vbox-{% endif %}{{ ansible_distribution_release }}-upstream-mariadbgalera-2'
+  - '{% if is_docker %}docker-{% else %}vbox-{% endif %}{{ ansible_distribution_release }}-upstream-mariadbgalera-3'

tests/group_vars/percona

@@ -1 +0,0 @@
-mysql_vendor: 'percona'

tests/group_vars/slave

@@ -2,7 +2,6 @@ mysql_replication_master: false
 mysql_replication_slave: true
 mysql_replication_user: 'replication'
 mysql_replication_password: '1a2b3c'
-mysql_replication_host: '{{ his_master }}'
 mysql_server_id: 2
 mysql_slave_ignore_db: ['norepl']
 

tests/group_vars/upstream

@@ -1 +0,0 @@
-mysql_origin: 'upstream'