selinux-policy: policy updates

From the Scientific Linux advisory:

* Prior to this update, the SELinux policy package did not allow the RHEV agent to execute. This update adds the policy for RHEV agents, so that they can be executed as expected.

* Previously, several labels were incorrect and rules for creating new 389-ds instances were missing. As a result, access vector caches (AVC) appeared when a new 389-ds instance was created through the 389-console. This update fixes the labels and adds the missing rules. Now, new 389-ds instances are created without further errors.

* Prior to this update, AVC error messages occurred in the audit.log file. With this update, the labels causing the error messages have been fixed, thus preventing this bug.