Fix mysql server attribiutes for suse family [mysql.sock,mysql.pid] and service name

1) As /etc/init/mysql script is having hardcoced path to resources, recipe
   needs to generate proper ones.

   On mysql version < 5.5 (SLE11_SP2)

    socket --> /var/lib/mysql/mysql.sock
    pid_file --> /var/lib/mysql/mysqld.pid

   on mysql/mariadb >= 5.5 (OpenSUSE 12.2)

    socket --> /var/run/mysql/mysql.sock
    pid_file --> /var/run/mysql/mysqld.pid

2) Serivce name for mysql server on SLE and openSUSE is mysql.
Fix issuses with systemd and mysql server packages on openSUSE.

On openSUSE init scripts are handled by systemd. Unfortunatley mysql server
packages (both mariadb and mysql-community-server) are not executing proper
actions to reload systemd after installing new init scripts.

Fix was allready send to openSUSE packages but this recipie can be ran on
unpatched system, so we need to make sure that system is reloaded before
starting mysql service.

Fix also is aware of problems with lsb on SLE that's why it checks
if node["lsb"]["description"] exists.