Updated armband

Updated armband
Project: vswitchperf  bd8bb26c67d696aba7b30bf4eb1616a7258b6f5d

ovs-appctl fix: Fixes ovs-appctl by placing pid file appropriately

ovs-appctl was broken due to a previous commit which changed the
location of the ovs-vswitchd pid file. This fixes it by placing
the pid back in the default location where ovs-appctl is looking
for.

JIRA: VSPERF-315

Change-Id: I4ae87ad566acb69ac9d565a3a77865f5a6861b93
Signed-off-by: MartinX Klozik <martinx.klozik@intel.com>
Signed-off-by: Christian Trautman <ctrautma@redhat.com>