apparmor, libvirt-qemu: Silence lttng related deny messages

Prevent denial messages related to attempted reads on lttng
files from spamming the logs.

Bug-Ubuntu: https://bugs.launchpad.net/bugs/1432644Signed-off-by: NChristian Ehrhardt <christian.ehrhardt@canonical.com>
Signed-off-by: NStefan Bader <stefan.bader@canonical.com>

examples/apparmor/libvirt-qemu

@@ -191,3 +191,7 @@
   /sys/devices/system/node/ r,
   /sys/devices/system/node/node[0-9]*/meminfo r,
   /sys/module/vhost/parameters/max_mem_regions r,
+
+  # silence refusals to open lttng files (see LP: #1432644)
+  deny /dev/shm/lttng-ust-wait-* r,
+  deny /run/shm/lttng-ust-wait-* r,