Extend import timeout

[Niquit]

For the creating database should be possible to extended parameter import_timeout (because default is 300 seconds) in mysql::db resource in database.pp. It depends on hardware, so for server with high RAM and CPU is not required.

Error: /Stage[main]/Zabbix::Database::Mysql/Exec[zabbix_server_create.sql]/returns: change from 'notrun' to ['0'] failed: Command exceeded timeout (corrective)```