Set correct SELinux context on the target file

Otherwise the target file would inherit source's context. This would
be especially problem on Fedora 20 and futher, where
/etc/sysconfig/rhn/oracle/main.sql receives rhnsd_conf_t context,
though slqlplus is not allowed to access that type (in Spacewalk
policy, we labeled /etc/sysconfig/rhn/deploy.sql with etc_t).
Automatic commit of package [spacewalk-admin] release [2.2.4-1].