Add wsrep_sst_method

Allow selection of wsrep_sst_method to support platforms such as Ubuntu
trusty on which the default rsync SST method will not work with Percona
XtraDB.
Formatting changes

Clean up a couple of overly long lines.
Merge pull request #7 from rickerc/add_ubuntu

Add wsrep_sst_method
Fix documentation drift

Parameter doc defaults didn't match reality
Prevent mysql::server::restart from being set

If mysql is allowed to restart services, on the node
that is responsible for bootstrapping this will cause
issues, since a 'service mysql restart' will take the
cluster down, but will not bring it back up.

The parameter is left as an option, as it may be
desirable in some circumstances.

Note that this does mean that the galera cluster will
not pick up config changes automatically, as config
changes will not trigger a restart of services.
Merge pull request #8 from michaeltchapman/restart_fix

Prevent mysql::server::restart from being set
Added the ability to configure package names

This can be used, for example, to choose different versions of packages.
Fixed trailing comma
Merge pull request #9 from dvorak/package_names

Added the ability to configure package names
Add OSP5 native package support

Introduce support for use on RHEL 7 with OSP5 native packages of MariaDB
with Galera.

Conflicts:
	manifests/params.pp