Upgrade Karaf to 4.4.10 (#5353)

Upgrade Karaf from 4.4.9 to 4.4.10.
This includes upgrades for the following libraries:
* pax-logging from 2.3.1 to 2.3.2
* xbean from 4.28 to 4.29

Reverts downgrade of karaf-maven-plugin to 4.4.8.

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

features/karaf/pom.xml

@@ -48,8 +48,7 @@
         <plugin>
           <groupId>org.apache.karaf.tooling</groupId>
           <artifactId>karaf-maven-plugin</artifactId>
-          <!-- TODO replace fixed version 4.4.8 by ${karaf.tooling.version} one karaf#2219 is contained in future release -->
-          <version>4.4.8</version>
+          <version>${karaf.tooling.version}</version>
           <extensions>true</extensions>
           <configuration>
             <startLevel>80</startLevel>