Revert "Merge pull request #38 from Lirt/fix/broken-mysql-dependency/#35"

This reverts commit 73fe802ded9054d2a9e18f83b163565ff425a9b3, reversing
changes made to 13c9ec76aa.

galera/map.jinja

     'innodb_buffer_pool_size': '3138M',
   },
   'Debian': {
-    'pkgs': ['mysql-wsrep-5.7', 'galera-3', 'rsync', 'python-mysqldb', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
+    'pkgs': ['mysql-wsrep-5.6', 'galera-3', 'rsync', 'python-mysqldb', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
     'service': 'mysql',
     'wsrep_provider': '/usr/lib/galera/libgalera_smm.so',
     'log_file': '/var/log/mysql.log',
     'innodb_buffer_pool_size': '3138M',
   },
   'Debian': {
-    'pkgs': ['mysql-wsrep-5.7', 'galera-3', 'rsync', 'python-mysqldb', 'libmysqlclient18', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
+    'pkgs': ['mysql-wsrep-5.6', 'galera-3', 'rsync', 'python-mysqldb', 'libmysqlclient18', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
     'service': 'mysql',
     'wsrep_provider': '/usr/lib/galera/libgalera_smm.so',
     'log_file': '/var/log/mysql.log',
     },
   }, merge=salt['grains.filter_by']({
   'trusty': {
-    'pkgs': ['mysql-wsrep-5.7', 'galera-3', 'rsync', 'python-mysqldb', 'libmysqlclient18', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
+    'pkgs': ['mysql-wsrep-5.6', 'galera-3', 'rsync', 'python-mysqldb', 'libmysqlclient18', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
     'service': 'mysql',
     'wsrep_provider': '/usr/lib/galera/libgalera_smm.so',
     'log_file': '/var/log/mysql.log',
     'config': '/etc/mysql/my.cnf',
     },
   'xenial': {
-    'pkgs': ['mysql-wsrep-5.7', 'galera-3', 'rsync', 'python-mysqldb', 'libmysqlclient-dev', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
+    'pkgs': ['mysql-wsrep-5.6', 'galera-3', 'rsync', 'python-mysqldb', 'libmysqlclient-dev', 'psmisc', 'netcat', 'percona-xtrabackup', 'socat', 'libdbd-mysql', 'python-pymysql'],
     'service': 'mysql',
     'wsrep_provider': '/usr/lib/galera/libgalera_smm.so',
     'log_file': '/var/log/mysql.log',

tests/pillar/repo_galeracluster.sls

     enabled: true
     repo:
       galeracluster:
-        source: 'deb http://releases.galeracluster.com/galera-3/ubuntu {{ grains.get('oscodename') }} main'
-        key_id: BC19DDBA
-        key_server: hkp://p80.pool.sks-keyservers.net:80
-      mysql-wsrep:
-        source: 'deb http://releases.galeracluster.com/mysql-wsrep-5.7/ubuntu {{ grains.get('oscodename') }} main'
+        source: 'deb http://releases.galeracluster.com/ubuntu {{ grains.get('oscodename') }} main'
         key_id: BC19DDBA
         key_server: hkp://p80.pool.sks-keyservers.net:80
       mitaka-staging_PPA:
         source: "deb http://ppa.launchpad.net/ubuntu-cloud-archive/mitaka-staging/ubuntu trusty main"
-        key_id: 8A6844A29F68104E
-        key_server: hkp://p80.pool.sks-keyservers.net:80