Univention Corporate Server 4.1-3 发布

Univention Corporate Server 4.1-3 发布，该版本拥有多项针对OpenSSL，QEMU 和 Samba 重要的安全补丁，同时还提供了一些新的特点。

更新内容：

The App Center has been improved in several areas and further possibilities for the migration of apps to "dockerized" apps have been implemented.
The replication of directory service objects has been stabilized in numerous corner cases.
The domain join of additional Samba based Active Directory domain controllers is now possible with more than 100,000 directory service objects.
The app appliances have been extended further and they now allow app providers to define an own branding as well as to activate a fast demonstration mode. Testers can now evaluate the app in the appliance very fast with pre-defined settings.
Configuration settings for the database management system MySQL can now be definied via UCR variables. For example apps can easier alter settings of the database system according to their needs.
Several import security updates have been integrated in UCS 4.1-3, among others for libvirt OpenSSL, QEMU and Samba. Furthermore, security updates in the standard LDAP ACLs and the UMC server have been integrated.