Upgrade to Apache Karaf 4.2.8

Change-Id: I8ae525e6c8a04c0381c5e3bac39de1a7b85b4446
diff --git a/tools/test/bin/onos-check-logs b/tools/test/bin/onos-check-logs
index 47df150..266a741 100755
--- a/tools/test/bin/onos-check-logs
+++ b/tools/test/bin/onos-check-logs
@@ -113,6 +113,8 @@
             /at org\.apache\.sshd\.server\.SshServer\.start/ { exclusion = 1; }
             /at org\.apache\.felix\.scr\.impl\.ComponentRegistry\.getComponentHolders/ { exclusion = 1; }
             /at org\.apache\.felix\.framework\.Felix/ { exclusion = 1; }
+            /at org\.apache\.karaf\.util\.tracker\.BaseActivator\.getTrackedService/ { exclusion = 1; }
+
 
         END { exit fail; }
         ' > $aux