Add timeout parameter to increase for long time running sql imports

Signed-off-by: refnode <refnode@gmail.com>
Merge branch 'master' of https://github.com/puppetlabs/puppetlabs-mysql
Add documentation for new mysql::db "import_timeout" parameter

Signed-off-by: refnode <refnode@gmail.com>
Merge branch 'pr/352'

Conflicts:
	README.md
	manifests/db.pp