mysql.server formula failed on gentoo because of hard-coded pid-file (pid_file is not detected as declared for gentoo defaults.yaml because the variable name for the pid-file is hard-coded in the init.d script installed by standard dev-db/mysql ebuild as pid-file (not pid_file)).
mysql.server formula also failed because it was missing the step. This commit adds this as an alternative mysql_initialize step for the gentoo os_family.
update default of pid-file to pid_file. Otherwise pid-file ends up always
in server.cnf and cannot be overriden, since all keys are modified to
use only underscores.
debconf.set which is used in mysql.server has a dependency on debconf-utils. If
it is not installed the password will not be set and is cumbersome to change
later on.
Add support of changing/adding any attribute in my.cnf. NB!!! It breaks backward compatibility for mysql.server state.
Delete mysql_size param support (now you can customiza all my.cnf parameters in pillar)
Add script import_users.py that create user pillar for existent server
Add support root@localhost mysql user without password (root_password = False)
Add support of grant_option
